零、前言
[1].Activity向Fragment传数据 [2].Fragment向Activity传数据 [3].Fragment向Fragment传数据
一、Activity向Fragment传数据效果：
ac2fg.gif
1.Ac2FgActivity.java
public class Ac2FgActivity extends AppCompatActivity {
@BindView(R.id.tv_data_content)
EditText mTvDataContent;
@BindView(R.id.btn_send_data)
Button mBtnSendData;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ac2fg);
ButterKnife.bind(this);
initFragment();
}
private void initFragment() {
FragmentManager fm = getFragmentManager();//1.获取FragmentManager
FragmentTransaction ft = fm.beginTransaction();//2.fm开启事务
//3.动态添加 （控件id,fragment对象，tag）
ft.add(R.id.fl_fragmemt_content, new ResultFragment());
ft.commit();//4.提交事务
}
@OnClick(R.id.btn_send_data)
public void onViewClicked() {
String result = mTvDataContent.getText().toString().trim();//获取输入结果
ResultFragment rfg = new ResultFragment();//创建ResultFragment对象
Bundle bundle = new Bundle();//创建Bundle对象
bundle.putString("data", result);//为bundle赋值
rfg.setArguments(bundle);//为ResultFragment设置Arguments
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.fl_fragmemt_content, rfg);//替换之前的
ft.commit();
}
}
2.activity_ac2fg.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="@+id/tv_data_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="I'm Activity:请输入传入fragment的信息"/>
<Button
android:id="@+id/btn_send_data"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tv_data_content"
android:layout_centerHorizontal="true"
android:text="点击传值"/>
<FrameLayout
android:id="@+id/fl_fragmemt_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/btn_send_data">
</FrameLayout>
</RelativeLayout>
3.ResultFragment.java
public class ResultFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_content, container, false);
TextView f_tv_content = view.findViewById(R.id.f_tv_content);
Bundle bundle = getArguments();
if (bundle != null) {
String reslut = bundle.getString("data");
f_tv_content.setText(reslut);
}
return view;
}
}
4.fragment_content.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/f_tv_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:background="#D5DBDD"
android:text="I'm Fragment"
android:textSize="24dp"/>
</RelativeLayout>
Activity向Fragment传数据.png
二、Fragment向Activity传数据效果：
fg2ac.gif
1.Fg2AcActivity.java
public class Fg2AcActivity extends AppCompatActivity{
@BindView(R.id.activity_tv_content)
TextView mActivityTvContent;
@BindView(R.id.fl_fragmemt_send)
FrameLayout mFlFragmemtSend;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fg2ac);
ButterKnife.bind(this);
initFragment();
}
private void initFragment() {
FragmentManager fm = getFragmentManager();//1.获取FragmentManager
FragmentTransaction ft = fm.beginTransaction();//2.fm开启事务
//3.动态添加 （控件id,fragment对象，tag）
ft.add(R.id.fl_fragmemt_send, new SendFragment());
ft.commit();//4.提交事务
}
/**
* 设置数据方法
* @param str
*/
public void setDate(String str) {
if (str != null && !"".equals(str)) {
mActivityTvContent.setText(str);
}
}
}
2.activity_fg2ac.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/activity_tv_content"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="I'm Activity:"
android:textSize="24dp"/>
<FrameLayout
android:id="@+id/fl_fragmemt_send"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/activity_tv_content">
</FrameLayout>
</RelativeLayout>
3.SendFragment.java
public class SendFragment extends Fragment {
private EditText tv_data_content;
private Button btn_send_data;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_send, container, false);
//可实现控件事件
tv_data_content = view.findViewById(R.id.tv_data_content);
btn_send_data = view.findViewById(R.id.btn_send_data);
btn_send_data.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String result = tv_data_content.getText().toString().trim();
((Fg2AcActivity)getActivity()).setDate(result);
}
});
return view;
}
}
4.fragment_send
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="@color/qq_line"
android:layout_height="match_parent">
<EditText
android:id="@+id/tv_data_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="I'm Fragment:请输入传入Activity的信息"/>
<Button
android:id="@+id/btn_send_data"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tv_data_content"
android:layout_centerHorizontal="true"
android:text="点击传值"/>
</RelativeLayout>
Fragment向Activity传数据.png
三、Fragment向Fragment传数据据效果：
fg2fg.gif
1.Fg2FgActivity.java
public class Fg2FgActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fg2fg);
initFragment();
}
private void initFragment() {
FragmentManager fm = getFragmentManager();//1.获取FragmentManager
FragmentTransaction ft = fm.beginTransaction();//2.fm开启事务
//3.动态添加 （控件id,fragment对象，tag）
ft.add(R.id.f_left, new LeftFragment());
ft.add(R.id.f_right, new RightFragment());
ft.commit();//4.提交事务
}
}
2.activity_fg2fg.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<FrameLayout
android:id="@+id/f_left"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
</FrameLayout>
<FrameLayout
android:id="@+id/f_right"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
</FrameLayout>
</LinearLayout>
3.LeftFragment.java
public class LeftFragment extends Fragment {
EditText mTvDataContent;
Button mBtnSendData;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_left, container, false);
mTvDataContent = view.findViewById(R.id.tv_data_content);
mBtnSendData = view.findViewById(R.id.btn_send_data);
mBtnSendData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str = mTvDataContent.getText().toString().trim();
TextView mtv = getActivity().findViewById(R.id.right_content);
mtv.setText(str);
}
});
return view;
}
}
4.fragment_left.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="@+id/tv_data_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="I'm left fragment"/>
<Button
android:id="@+id/btn_send_data"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tv_data_content"
android:layout_centerHorizontal="true"
android:text="点击传值"/>
</LinearLayout>
5.RightFragment.java
public class RightFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_right, container, false);
return view;
}
}
6.fragment_right.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#eee"
android:orientation="vertical">
<TextView
android:id="@+id/right_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="I'm right fragment"/>
</LinearLayout>
后记、
1.声明：
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转载于:https://www.cnblogs.com/toly-top/p/9781925.html
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