以SD卡读写权限为例：
MainActivity继承PermissionActivity,调用时，仅需：
applyStoragePermission();
this.setOnPermissionListener(
new OnPermissionListener() {
@Override
public void ok() {
}
});
申请权限的Activity父类：(此处仅以SD卡为例，其他可以在switch中添加其他)
package utils.base;
import android.Manifest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
/**
* 作者：张风捷特烈
* 时间：2018/5/16 14:55
* 邮箱：1981462002@qq.com
* 说明：申请权限的Activity父类
*/
public class PermissionActivity extends AppCompatActivity {
private static final int STORAGE_CODE =
0x01;
private PermissionBean mStorageModel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
/**
* 申请权限
*/
public void applyPermission(PermissionBean model) {
if (PackageManager.PERMISSION_GRANTED != ContextCompat.checkSelfPermission(
this, model.permission)) {
ActivityCompat.requestPermissions(
this,
new String[]{model.permission}, model.requestCode);
return;
}
if (mOnPermissionListener !=
null) {
mOnPermissionListener.ok();
}
}
/**
* 申请SD卡读写权限
*/
public void applyStoragePermission() {
mStorageModel =
new PermissionBean(Manifest.permission.WRITE_EXTERNAL_STORAGE,
"我们需要您允许我们读写你的存储卡，以方便我们临时保存一些数据", STORAGE_CODE);
applyPermission(mStorageModel);
}
@Override
public void onRequestPermissionsResult(
int requestCode, String[] permissions,
int[] grantResults) {
switch (requestCode) {
case STORAGE_CODE:
showInfoDialog(permissions, grantResults[
0], mStorageModel);
break;
}
}
/**
* 如果拒绝，弹出对话框，说明为什么需要这个权限
*
* @param permissions
* @param grantResult
* @param model
*/
private void showInfoDialog(String[] permissions,
int grantResult, PermissionBean model) {
if (PackageManager.PERMISSION_GRANTED != grantResult) {
if (ActivityCompat.shouldShowRequestPermissionRationale(
this, permissions[
0])) {
AlertDialog.Builder builder =
new AlertDialog.Builder(
this).setTitle(
"权限申请")
.setMessage(model.explain).setPositiveButton(
"我知道了",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
applyStoragePermission();
}
}
);
builder.setCancelable(
false);
builder.show();
}
return;
}
}
/**
* Permission的bean对象
*/
public static class PermissionBean {
public String permission;
public String explain;
public int requestCode;
public PermissionBean(String permission, String explain,
int requestCode) {
this.permission = permission;
this.explain = explain;
this.requestCode = requestCode;
}
}
/**
* 权限申请事件监听
*/
public interface OnPermissionListener {
void ok();
}
private OnPermissionListener mOnPermissionListener;
public void setOnPermissionListener(OnPermissionListener onPermissionListener) {
mOnPermissionListener = onPermissionListener;
}
}
转载于:https://www.cnblogs.com/toly-top/p/9782031.html
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