工具类：
public class UIUtil { /*** * 获取本机IP * @param context * @return */ public static String getIP(Context context){ try { for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress() && (inetAddress instanceof Inet4Address)) { return inetAddress.getHostAddress().toString(); } } } } catch (SocketException ex){ ex.printStackTrace(); } return null; } /** * 格式化单位 * * @param size * @return */ public static String getFormatSize(double size) { double kiloByte = size / 1024; if (kiloByte < 1) { return "0K"; } double megaByte = kiloByte / 1024; if (megaByte < 1) { BigDecimal result1 = new BigDecimal(Double.toString(kiloByte)); return result1.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() + "KB"; } double gigaByte = megaByte / 1024; if (gigaByte < 1) { BigDecimal result2 = new BigDecimal(Double.toString(megaByte)); return result2.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() + "MB"; } double teraBytes = gigaByte / 1024; if (teraBytes < 1) { BigDecimal result3 = new BigDecimal(Double.toString(gigaByte)); return result3.setScale(2, BigDecimal.ROUND_HALF_UP) .toPlainString() + "GB"; } BigDecimal result4 = new BigDecimal(teraBytes); return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB"; } /** 求差 */ public static float getSubtraction(float float1, float float2) { BigDecimal b1 = new BigDecimal(Float.toString(float1)); BigDecimal b2 = new BigDecimal(Float.toString(float2)); if (b1.subtract(b2).floatValue() <= 0) { return 0; } return b1.subtract(b2).floatValue(); } public static double getSubtraction(double float1, double float2) { BigDecimal b1 = new BigDecimal(Double.toString(float1)); BigDecimal b2 = new BigDecimal(Double.toString(float2)); if (b1.subtract(b2).doubleValue() <= 0) { return 0; } return b1.subtract(b2).doubleValue(); } public static double getSubtraction_(double float1, double float2) { BigDecimal b1 = new BigDecimal(Double.toString(float1)); BigDecimal b2 = new BigDecimal(Double.toString(float2)); if (b1.subtract(b2).doubleValue() <= 0) { return 0; } return b1.subtract(b2).setScale(5, BigDecimal.ROUND_DOWN).doubleValue(); } public static double getSubtraction__(double float1, double float2) { BigDecimal b1 = new BigDecimal(Double.toString(float1)); BigDecimal b2 = new BigDecimal(Double.toString(float2)); if (b1.subtract(b2).doubleValue() <= 0) { return 0; } return b1.subtract(b2).setScale(5, BigDecimal.ROUND_DOWN).doubleValue(); } /*** 求和 */ public static float getAdd(float float1, float float2) { BigDecimal b1 = new BigDecimal(Float.toString(float1)); BigDecimal b2 = new BigDecimal(Float.toString(float2)); return b1.add(b2).setScale(2, BigDecimal.ROUND_FLOOR).floatValue(); } public static double getAdd(double float1, double float2) { BigDecimal b1 = new BigDecimal(Double.toString(float1)); BigDecimal b2 = new BigDecimal(Double.toString(float2)); return b1.add(b2).doubleValue(); } /** * 提供精确的乘法运算。 * * @param v1 * 被乘数 * @param v2 * 乘数 * @return 两个参数的积 */ public static float mul(float v1, float v2) { BigDecimal b1 = new BigDecimal(Float.toString(v1)); BigDecimal b2 = new BigDecimal(Float.toString(v2)); return b1.multiply(b2).floatValue(); } public static double mul(double v1, double v2) { BigDecimal b1 = new BigDecimal(Double.toString(v1)); BigDecimal b2 = new BigDecimal(Double.toString(v2)); return b1.multiply(b2).setScale(5, BigDecimal.ROUND_HALF_UP) .doubleValue(); } public static double mul_(double v1, double v2) { BigDecimal b1 = new BigDecimal(Double.toString(v1)); BigDecimal b2 = new BigDecimal(Double.toString(v2)); return b1.multiply(b2).setScale(5, BigDecimal.ROUND_HALF_UP) .doubleValue(); } /*** * 除法 * * @param v1 * @param v2 * @return */ public static float divide(float v1, float v2) { if (v2 <= 0) { return 0; } BigDecimal b1 = new BigDecimal(Float.toString(v1)); BigDecimal b2 = new BigDecimal(Float.toString(v2)); return b1.divide(b2, 2).setScale(5, BigDecimal.ROUND_FLOOR) .floatValue(); } public static double divide(double v1, double v2) { if (v2 <= 0) { return 0; } BigDecimal b1 = new BigDecimal(Double.toString(v1)); BigDecimal b2 = new BigDecimal(Double.toString(v2)); return b1.divide(b2, 3, BigDecimal.ROUND_HALF_UP) .setScale(5, BigDecimal.ROUND_FLOOR).floatValue(); } public static double divide_(double v1, double v2) { if (v2 <= 0) { return 0; } BigDecimal b1 = new BigDecimal(Double.toString(v1)); BigDecimal b2 = new BigDecimal(Double.toString(v2)); return b1.divide(b2, 3, BigDecimal.ROUND_HALF_UP) .setScale(5, BigDecimal.ROUND_FLOOR).floatValue(); } public static void showErrorMsg(Context mContext, APIResult apiResult) { try { if (apiResult.code.equals("401")) { accountError(mContext, "该帐号已在其他设备登录，请注意账号安全！"); } else if (apiResult.code.equals("0000011")) { accountError(mContext, apiResult.msg); } else if (apiResult.code.equals("0000003")) { accountError(mContext, apiResult.msg); } else if (apiResult.code.equals("2000001")) { accountError(mContext, apiResult.msg); } else { UIUtil.alert(mContext, apiResult.msg); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void accountError(final Context mContext, String msg) { try { final AlertDialogUI alertDialog = new AlertDialogUI(mContext); alertDialog.setMessage(msg); alertDialog.setPositiveButton("确定", new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub alertDialog.dismiss(); logOffByError(mContext); } }); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void logOffByError(Context mContext) { try { SharedPre.clearData(mContext); SharedPre.saveAccessToken(mContext, ShareKey.access_token, ""); Intent intent = new Intent(mContext, MineLoginAct.class); mContext.startActivity(intent); ((Activity) mContext).overridePendingTransition( R.anim.push_left_in, R.anim.push_left_out); ((Activity) mContext).finish(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } // 要转换的地址或字符串,可以是中文 public static Bitmap createQRImage(String url, int size) throws WriterException { // 判断URL合法性 if (url == null || "".equals(url) || url.length() < 1) { return null; } Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 图像数据转换，使用了矩阵转换 BitMatrix bitMatrix = new QRCodeWriter().encode(url, BarcodeFormat.QR_CODE, size, size, hints); int[] pixels = new int[size * size]; // 下面这里按照二维码的算法，逐个生成二维码的图片， // 两个for循环是图片横列扫描的结果 for (int y = 0; y < size; y++) { for (int x = 0; x < size; x++) { if (bitMatrix.get(x, y)) { pixels[y * size + x] = 0xff000000; } else { pixels[y * size + x] = 0xffffffff; } } } // 生成二维码图片的格式，使用ARGB_8888 Bitmap bitmap = Bitmap .createBitmap(size, size, Bitmap.Config.ARGB_8888); bitmap.setPixels(pixels, 0, size, 0, 0, size, size); // 显示到一个ImageView上面 // sweepIV.setImageBitmap(bitmap); return bitmap; } /** * 用来判断服务是否运行. * * @param * @param className * 判断的服务名字 * @return true 在运行 false 不在运行 */ public static boolean isServiceRunning(Context mContext, String className) { boolean isRunning = false; ActivityManager activityManager = (ActivityManager) mContext .getSystemService(Context.ACTIVITY_SERVICE); List<ActivityManager.RunningServiceInfo> serviceList = activityManager .getRunningServices(30); if (!(serviceList.size() > 0)) { return false; } for (int i = 0; i < serviceList.size(); i++) { if (serviceList.get(i).service.getClassName().equals(className) == true) { isRunning = true; break; } } return isRunning; } /** * 设置本地图片 * * @param url * @return */ public static void setLoacalBitmap(ImageView view, String url) { try { FileInputStream fis = new FileInputStream(url); Bitmap bitmap = BitmapFactory.decodeStream(fis); if (bitmap != null) { view.setImageBitmap(bitmap); } } catch (FileNotFoundException e) { e.printStackTrace(); } } public static boolean isConnect(Context context) { // 获取手机所有连接管理对象（包括对wi-fi,net等连接的管理） try { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity != null) { // 获取网络连接管理的对象 NetworkInfo info = connectivity.getActiveNetworkInfo(); if (info != null && info.isConnected()) { // 判断当前网络是否已经连接 if (info.getState() == NetworkInfo.State.CONNECTED) { return true; } } } } catch (Exception e) { // TODO: handle exception Log.v("error", e.toString()); } return false; } /** * * @Title: hideSystemKeyBoard * @Description: TODO(这里用一句话描述这个方法的作用) * @param @param mcontext * @param @param v 设定文件 * @return void 返回类型 * @throws */ public static void hideSystemKeyBoard(Context mcontext, View v) { try { InputMethodManager imm = (InputMethodManager) mcontext .getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(v.getWindowToken(), 0); } catch (Exception e) { } } /** * 获取版本号 * * @return 当前应用的版本号 */ public static String getVersion(Context context) { try { PackageManager manager = context.getPackageManager(); PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0); String version = info.versionName; return version; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 根据手机的分辨率从 px(像素) 的单位 转成为 dp */ public static int px2dip(Context context, float pxValue) { final float scale = context.getResources().getDisplayMetrics().density; return (int) (pxValue / scale + 0.5f); } /** * * 二维码的 大小 * * @param * @author Steven * @return void */ public static int getMaxCodeSize(float density) { int textSize = 0; if (density >= 3.0) { textSize = 220; } else if (density > 2.0 && density < 3.0) { textSize = 180; } else if (density >= 1.5 && density < 2.0) { textSize = 140; } else if (density >= 1.0 && density < 1.5) { textSize = 100; } else { textSize = 100; } return textSize; } /** * 密度计算 字体大小 文本框 * * @param * @author Steven * @return void */ public static float getTextSize(float density) { float textSize = 0.0f; if (density >= 3.0) { textSize = 24; } else if (density >= 2.0 && density < 3.0) { textSize = 16; } else if (density >= 1.5 && density < 2.0) { textSize = 14; } else if (density >= 1.0 && density < 1.5) { textSize = 10; } else { textSize = 12; } return textSize; } /** * 密度计算 发送短信 字体 字体大小 * * @param * @author Steven * @return void */ public static float getSendCodeBtnTextSize(float density) { float textSize = 0.0f; if (density >= 3.0) { textSize = 15; } else if (density >= 2.0 && density < 3.0) { textSize = 14; } else if (density >= 1.5 && density < 2.0) { textSize = 12; } else if (density >= 1.0 && density < 1.5) { textSize = 10; } else { textSize = 10; } return textSize; } /** * 动态计算设置listview高度 * * @函数名 setListViewHeightBasedOnChildren * @功能 TODO * @param listView * @备注 <其它说明> */ public static void changeListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null) { // pre-condition return; } int totalHeight = 0; for (int i = 0; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null, listView); listItem.measure(0, 0); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); listView.setLayoutParams(params); } public static void setListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null) { return; } int totalHeight = 0; for (int i = 0; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null, listView); listItem.measure(0, 0); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); // ((MarginLayoutParams) params).setMargins(10, 10, 10, 10); // 可删除 listView.setLayoutParams(params); } private static Toast toast = null; public static void showToastl(Context con, String str) { if (toast == null) { toast = Toast.makeText(con, str, Toast.LENGTH_LONG); } else { toast.setText(str); toast.setDuration(Toast.LENGTH_SHORT); } toast.show(); } public static void showToasts(Context con, String str) { if (toast == null) { toast = Toast.makeText(con, str, Toast.LENGTH_SHORT); } else { toast.setText(str); toast.setDuration(Toast.LENGTH_SHORT); } toast.show(); } public static void showToasts(Context con, int res) { if (toast == null) { toast = Toast.makeText(con, res, Toast.LENGTH_SHORT); } else { toast.setText(res); toast.setDuration(Toast.LENGTH_SHORT); } toast.show(); } public static int Dp2Px(Context con, int dp) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, dp, con.getResources().getDisplayMetrics()); } public static int Px2Dp(Context con, int px) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, px, con.getResources().getDisplayMetrics()); } public static int getPxFromDpRes(Context con, int resid) { return (int) con.getResources().getDimension(resid); } public static Drawable resizeDrawable(Context con, Drawable dr, int w, int h) { // Read your drawable from somewhere // Drawable dr = getResources().getDrawable(R.drawable.somedrawable); Bitmap bitmap = ((BitmapDrawable) dr).getBitmap(); // Scale it to 50 x 50 Drawable rdr = new BitmapDrawable(con.getResources(), Bitmap.createScaledBitmap(bitmap, w, h, true)); // Set your new, scaled drawable "d" return rdr; } public static Drawable Bitmap2Drawable(Context con, Bitmap bm) { BitmapDrawable bd = new BitmapDrawable(con.getResources(), bm); return bd; } public static Bitmap Drawable2Bitmap(Context con, Drawable dr) { int w = dr.getIntrinsicWidth(); int h = dr.getIntrinsicHeight(); // 取 drawable 的颜色格式 Bitmap.Config config = dr.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; // 建立对应 bitmap Bitmap bitmap = Bitmap.createBitmap(w, h, config); // 建立对应 bitmap 的画布 Canvas canvas = new Canvas(bitmap); dr.setBounds(0, 0, w, h); // 把 drawable 内容画到画布中 dr.draw(canvas); return bitmap; } public static Bitmap rotateBitmap(Bitmap b, int degrees) { if (degrees != 0 && b != null) { Matrix m = new Matrix(); m.setRotate(degrees, (float) b.getWidth() / 2, (float) b.getHeight() / 2); try { Bitmap b2 = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), m, true); if (b != b2) { b.recycle(); // Android开发网再次提示Bitmap操作完应该显示的释放 b = b2; } } catch (OutOfMemoryError ex) { // Android123建议大家如何出现了内存不足异常，最好return 原始的bitmap对象。. // Log.e(TAG, "rotateBmp OutOfMemoryError"); ex.printStackTrace(); } } return b; } // to do need to improve and do with jpg and quality // // image.compressToJpeg( // new Rect(0, 0, image.getWidth(), image.getHeight()), 90, // filecon); public static Bitmap loadBitmapFromLocal(String imgPath) { BitmapFactory.Options options = new BitmapFactory.Options(); // options.inPreferredConfig = Bitmap.Config.RGB_565;// 表示16位位图 // 565代表对应三原色占的位数 // options.inInputShareable=true; //?? options.inPurgeable = true;// 设置图片可以被回收 options.inTempStorage = new byte[1024 * 1024 * 10]; // options.inSampleSize = 1; Bitmap bm = BitmapFactory.decodeFile(imgPath, options); return bm; // jpgView.setImageBitmap(bm); } public static Bitmap loadBitmapFromLocalWithSampleSize(String imgPath, int sampleSize) { BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = sampleSize; Bitmap bm = BitmapFactory.decodeFile(imgPath, options); return bm; // jpgView.setImageBitmap(bm); } // todo calc file size with inJustDecodeBounds // todo get bitmap with inSampleSize public static void saveBitmap2JPG(String path, Bitmap bitmap) { File f = new File(path);// ("/sdcard/" + bitName + ".png"); FileOutputStream fOut = null; try { f.createNewFile(); fOut = new FileOutputStream(f); bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fOut); fOut.flush(); fOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static void saveBitmap2JPG(String dir, String filename, Bitmap bitmap) { saveBitmap2JPG(dir + File.separator + filename, bitmap); } public static void saveBitmap2PNG(String path, Bitmap bitmap) { File f = new File(path);// ("/sdcard/" + bitName + ".png"); FileOutputStream fOut = null; try { f.createNewFile(); fOut = new FileOutputStream(f); bitmap.compress(Bitmap.CompressFormat.PNG, 50, fOut); fOut.flush(); fOut.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static void saveBitmap2PNG(String dir, String filename, Bitmap bitmap) { saveBitmap2PNG(dir + File.separator + filename, bitmap); } /** * * global only file , not safe * */ public static String getTmpResImgPath(int resid, Context con) { return getTmpResImgPath(resid, con, "tmpResImgFile.jpg"); } /** * * like "tmpResImgFile.jpg" * * */ public static String getTmpResImgPath(int resid, Context con, String fileName) { Drawable drawable = con.getResources().getDrawable(resid); Bitmap bmp = Drawable2Bitmap(con, drawable); String tmpResImgPath = EnvUtils.getAppCacheDir(con) + File.separator + fileName; saveBitmap2JPG(tmpResImgPath, bmp); return tmpResImgPath; } /** * * like "tmpResImgFile.jpg" * * */ public static String getTmpResImgPathWithoutRewrite(int resid, Context con, String fileName) { Drawable drawable = con.getResources().getDrawable(resid); Bitmap bmp = Drawable2Bitmap(con, drawable); String tmpResImgPath = EnvUtils.getAppCacheDir(con) + File.separator + fileName; if (!FileUtils.isFileExist(tmpResImgPath)) { saveBitmap2JPG(tmpResImgPath, bmp); } return tmpResImgPath; } /** * * like ".../data/tmpResImgFile.jpg" * * */ public static String saveResImg2Path(int resid, Context con, String filePath) { Drawable drawable = con.getResources().getDrawable(resid); Bitmap bmp = Drawable2Bitmap(con, drawable); String tmpResImgPath = filePath; saveBitmap2JPG(tmpResImgPath, bmp); return tmpResImgPath; } /** * 安全获取edit的string */ public static String getEditTextSafe(EditText editText) { if (editText != null && editText.getText() != null && !(editText.getText().toString().trim().equals(""))) { return editText.getText().toString().trim(); } else { return ""; } } /** * 判断edittext是否null,是的话返回true */ public static Boolean isEditTextEmpty(EditText editText) { if (editText != null && editText.getText() != null && !(editText.getText().toString().trim().equals(""))) { return false; } else { return true; } } public static void alert(Context context, String message) { final AlertDialogUI alertDialog = new AlertDialogUI(context); alertDialog.setMessage(message); alertDialog.setPositiveButton(context.getString(R.string.confirm), new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub alertDialog.dismiss(); } }); } public static void alert(Context context, String title, String message) { final AlertDialogUI alertDialog = new AlertDialogUI(context); alertDialog.setTitle(title); alertDialog.setMessage(message); alertDialog.setPositiveButton(context.getString(R.string.confirm), new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub alertDialog.dismiss(); } }); } public static void alert(Context context, String title, String message, String ok) { final AlertDialogUI alertDialog = new AlertDialogUI(context); alertDialog.setTitle(title); alertDialog.setMessage(message); alertDialog.setPositiveButton(ok, new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub alertDialog.dismiss(); } }); } public static ProgressDialog loadingDialog(Context context) { ProgressDialog dlg = new ProgressDialog(context, ProgressDialog.STYLE_SPINNER); dlg.setCancelable(false); dlg.setCanceledOnTouchOutside(false); dlg.show(); ProgressBar progress = (ProgressBar) dlg .findViewById(android.R.id.progress); LayoutParams progressParams = progress.getLayoutParams(); progressParams.height = LayoutParams.WRAP_CONTENT; progressParams.width = LayoutParams.MATCH_PARENT;// set MATCH_PARENT to // center progress.setLayoutParams(progressParams); LinearLayout linear = (LinearLayout) progress.getParent(); FrameLayout contentp = (FrameLayout) linear.getParent(); FrameLayout contentp2 = (FrameLayout) contentp.getParent(); FrameLayout contentp3 = (FrameLayout) contentp2.getParent(); contentp3.setBackgroundResource(0);// remove gray background return dlg; } public static ProgressDialog loadingDialog(Context context, String title, String message) { ProgressDialog dlg = ProgressDialog.show(context, title, message, true, false); TextView msg = (TextView) dlg.findViewById(android.R.id.message); msg.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18); return dlg; } private static ProgressDialog loadingDialogTranslucent(Context context) { ProgressDialog dlg = new ProgressDialog(context, ProgressDialog.STYLE_SPINNER); dlg.setCancelable(false); dlg.setCanceledOnTouchOutside(false); dlg.show(); ProgressBar progress = (ProgressBar) dlg .findViewById(android.R.id.progress); LayoutParams progressParams = progress.getLayoutParams(); progressParams.height = LayoutParams.WRAP_CONTENT; progressParams.width = LayoutParams.MATCH_PARENT;// set MATCH_PARENT to // center progress.setLayoutParams(progressParams); LinearLayout linear = (LinearLayout) progress.getParent(); FrameLayout contentp = (FrameLayout) linear.getParent(); FrameLayout contentp2 = (FrameLayout) contentp.getParent(); FrameLayout contentp3 = (FrameLayout) contentp2.getParent(); LinearLayout contentp4 = (LinearLayout) contentp3.getParent(); FrameLayout contentp5 = (FrameLayout) contentp4.getParent(); FrameLayout contentp6 = (FrameLayout) contentp5.getParent(); FrameLayout contentp7 = (FrameLayout) contentp6.getParent(); contentp3.setBackgroundResource(0);// remove gray background // contentp7.setBackgroundResource(0); // contentp4.setBackgroundColor(context.getResources().getColor(android.R.color.transparent)); // contentp5.setBackgroundColor(context.getResources().getColor(android.R.color.transparent)); // contentp6.setBackgroundColor(context.getResources().getColor(android.R.color.transparent)); // contentp7.setBackgroundColor(context.getResources().getColor(android.R.color.transparent)); return dlg; } // / /** * 重新定义图片高度 * * @author Davis * @param bitmapToScale * @param newWidth * @param newHeight * @return */ public static Bitmap scaleBitmap(Bitmap bitmapToScale, float newWidth, float newHeight) { if (bitmapToScale == null) { return null; } // get the original width and height int width = bitmapToScale.getWidth(); int height = bitmapToScale.getHeight(); if (width == newWidth && height == newHeight) { return bitmapToScale; } // create a matrix for the manipulation Matrix matrix = new Matrix(); // resize the bit map matrix.postScale(newWidth / width, newHeight / height); // recreate the new Bitmap and set it back return Bitmap.createBitmap(bitmapToScale, 0, 0, bitmapToScale.getWidth(), bitmapToScale.getHeight(), matrix, true); } private static long lastClickTime; public static boolean isFastDoubleClick() { long time = System.currentTimeMillis(); long timeD = time - lastClickTime; if (0 < timeD && timeD < 1000) { return true; } lastClickTime = time; return false; } private static long lastclickTime; public static boolean isfastdoubleClick() { long time = System.currentTimeMillis(); long timeD = time - lastclickTime; if (0 < timeD && timeD < 2000) { return true; } lastclickTime = time; return false; } /** * 登录 * * @author Davis * @param mContext */ public static void checkLogin(final Context mContext) { final AlertDialogUI dialogUI = new AlertDialogUI(mContext); dialogUI.setTitle("登录"); dialogUI.setMessage("您还没有登录，不能收藏！是否登录？"); dialogUI.setPositiveButton("确定", new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub dialogUI.dismiss(); // Intent intent = new Intent(mContext, MineLoginAct.class); // mContext.startActivity(intent); } }); dialogUI.setNegativeButton("取消", new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub dialogUI.dismiss(); } }); } /*** * 拨打电话 * * @author Davis * @param phoneno * @param mContext */ public static void cellPhone(final String phoneno, final Context mContext) { final AlertDialogUI dialogUI = new AlertDialogUI(mContext); dialogUI.setTitle("拨号"); dialogUI.setMessage("您是否要拨打:" + phoneno); dialogUI.setPositiveButton("确定", new android.view.View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub dialogUI.dismiss(); Intent intent = new Intent(Intent.ACTION_DIAL, Uri .parse("tel:" + phoneno)); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mContext.startActivity(intent); ((Activity) mContext).overridePendingTransition( R.anim.push_left_in, R.anim.push_left_out); } }); dialogUI.setNegativeButton("取消", new android.view.View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub dialogUI.dismiss(); } }); } /** * 判断是否安装目标应用 * * @author Davis * @param packageName * 目标应用安装后的包名 * @return 是否已安装目标应用 */ private static boolean isInstallByread(String packageName) { return new File("/data/data/" + packageName).exists(); } public static String bitmapToString(String filePath) { int degree = readPictureDegree(filePath); Bitmap bm = getSmallBitmap(filePath); bm = rotaingImageView(degree, bm); ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.JPEG, 40, baos); byte[] b = baos.toByteArray(); return Base64.encodeToString(b, Base64.DEFAULT); } public static Bitmap getSmallBitmap(String filePath) { final BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeFile(filePath, options); // Calculate inSampleSize options.inSampleSize = calculateInSampleSize(options, 420, 360); // Decode bitmap with inSampleSize set options.inJustDecodeBounds = false; return BitmapFactory.decodeFile(filePath, options); } public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { final int heightRatio = Math.round((float) height / (float) reqHeight); final int widthRatio = Math.round((float) width / (float) reqWidth); inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio; } return inSampleSize; } public static Bitmap rotaingImageView(int angle, Bitmap bitmap) { Matrix matrix = new Matrix(); matrix.postRotate(angle); Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return resizedBitmap; } public static int readPictureDegree(String path) { int degree = 0; try { ExifInterface exifInterface = new ExifInterface(path); int orientation = exifInterface.getAttributeInt( ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL); switch (orientation) { case ExifInterface.ORIENTATION_ROTATE_90: degree = 90; break; case ExifInterface.ORIENTATION_ROTATE_180: degree = 180; break; case ExifInterface.ORIENTATION_ROTATE_270: degree = 270; break; } } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { // TODO: handle exception } return degree; } /*** * @author Davis * @param mContext * @return * @throws Exception */ public static String getVersionName(Context mContext) { try { // 获取packagemanager的实例 PackageManager packageManager = mContext.getPackageManager(); // getPackageName()是你当前类的包名，0代表是获取版本信息 PackageInfo packInfo = packageManager.getPackageInfo( mContext.getPackageName(), 0); return packInfo.versionName; } catch (Exception e) { // TODO: handle exception } return ""; } public static Bitmap returnBitMap(String url, int type, int height) { BitmapFactory.Options opts = new BitmapFactory.Options(); opts.inJustDecodeBounds = true; opts.inPreferredConfig = Bitmap.Config.RGB_565; opts.inPurgeable = true; opts.inInputShareable = true; if (type > 0) { opts.inSampleSize = 16; } else { opts.inSampleSize = 8; } opts.outHeight = height; URL myFileUrl = null; Bitmap bitmap = null; try { myFileUrl = new URL(url); } catch (MalformedURLException e) { e.printStackTrace(); } try { if (null != myFileUrl) { HttpURLConnection conn = (HttpURLConnection) myFileUrl .openConnection(); conn.setDoInput(true); conn.connect(); InputStream is = conn.getInputStream(); bitmap = BitmapFactory.decodeStream(is); is.close(); } } catch (IOException e) { e.printStackTrace(); } finally { } return bitmap; } @SuppressWarnings("unused") private static int computeInitialSampleSize(BitmapFactory.Options options, int minSideLength, int maxNumOfPixels) { double w = options.outWidth; double h = options.outHeight; int lowerBound = (maxNumOfPixels == -1) ? 1 : (int) Math.ceil(Math .sqrt(w * h / maxNumOfPixels)); int upperBound = (minSideLength == -1) ? 128 : (int) Math.min( Math.floor(w / minSideLength), Math.floor(h / minSideLength)); if (upperBound < lowerBound) { // return the larger one when there is no overlapping zone. return lowerBound; } if ((maxNumOfPixels == -1) && (minSideLength == -1)) { return 1; } else if (minSideLength == -1) { return lowerBound; } else { return upperBound; } } /*** * 查看大图 * * @param position * @param imgList * @param mContext */ public static void viewImage(int position, List<String> imgList, Context mContext, String content) { try { Intent intent = new Intent(mContext, GalleryPictureActivity.class); intent.putExtra("Position", position); intent.putExtra("Content", content); intent.putStringArrayListExtra("ImageList", (ArrayList<String>) imgList); mContext.startActivity(intent); } catch (Exception e) { // TODO: handle exception } } /** * 从相册得到的url转换为SD卡中图片路径 */ @SuppressLint("NewApi") public static String getPath(Uri uri, Context mContext) { String filePath = ""; try { if (StringUtils.isEmpty(uri.getAuthority())) { return null; } String[] projection = { MediaStore.Images.Media.DATA }; Cursor cursor = ((Activity) mContext).managedQuery(uri, projection, null, null, null); int column_index = cursor .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); filePath = cursor.getString(column_index); if (StringUtils.isEmpty(filePath)) { if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) { String wholeID = DocumentsContract.getDocumentId(uri); String id = wholeID.split(":")[1]; String[] column = { MediaStore.Images.Media.DATA }; String sel = MediaStore.Images.Media._ID + " = ?"; Cursor cursor1 = mContext.getContentResolver().query( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, column, sel, new String[] { id }, null); int columnIndex = cursor1.getColumnIndex(column[0]); if (cursor1.moveToFirst()) { filePath = cursor1.getString(columnIndex); } cursor1.close(); } } } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO: handle exception } return filePath; } /** * 获取屏幕尺寸与密度. * * @param context * the context * @return mDisplayMetrics */ public static DisplayMetrics getDisplayMetrics(Context context) { Resources mResources; if (context == null) { mResources = Resources.getSystem(); } else { mResources = context.getResources(); } // DisplayMetrics{density=1.5, width=480, height=854, scaledDensity=1.5, // xdpi=160.421, ydpi=159.497} // DisplayMetrics{density=2.0, width=720, height=1280, // scaledDensity=2.0, xdpi=160.42105, ydpi=160.15764} DisplayMetrics mDisplayMetrics = mResources.getDisplayMetrics(); return mDisplayMetrics; } /** 设置图片圆角 */ public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); final float roundPx = pixels; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } @SuppressLint("NewApi") @SuppressWarnings("deprecation") public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) { android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(cameraId, info); int rotation = activity.getWindowManager().getDefaultDisplay() .getRotation(); int degrees = 0; switch (rotation) { case Surface.ROTATION_0: degrees = 0; break; case Surface.ROTATION_90: degrees = 90; break; case Surface.ROTATION_180: degrees = 180; break; case Surface.ROTATION_270: degrees = 270; break; } int result; if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { result = (info.orientation + degrees) % 360; result = (360 - result) % 360; // compensate the mirror } else { // back-facing result = (info.orientation - degrees + 360) % 360; } camera.setDisplayOrientation(result); } }
