旺仔：发送一般广播，静态注册和动态注册

package com.example.administrator.test.Fragment.Broadcast;

import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

import com.example.administrator.test.R;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.activity_main );
    }
    public void bt1_OnClick(View v)
    {
        //一般广播
        Intent intent=new Intent( "Broadcast.MainActivity1" );
        intent.putExtra( "name","广播发送测试" );
        sendBroadcast( intent );
        Toast.makeText( this, "一般广播已经发出去了", Toast.LENGTH_SHORT ).show();
    }
    //动态注册
    MyReceiver mr;
    public void bt2_OnClick(View v)
    {
        mr=new MyReceiver();
        IntentFilter interFilter=new IntentFilter( "Broadcast.MainActivity1" );
        registerReceiver( mr,interFilter );

    }
    //反注册


    @Override
    protected void onDestroy() {
        if (mr!=null)
        {
            unregisterReceiver( mr );
        }
        super.onDestroy();
    }
}

package com.example.administrator.test.Fragment.Broadcast;

        import android.content.BroadcastReceiver;
        import android.content.Context;
        import android.content.Intent;
        import android.util.Log;
        import android.widget.Toast;

public class MyReceiver extends BroadcastReceiver {
    public MyReceiver() {
        Log.e( "TAG","MyReceiver被实例化" );
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        String str=intent.getStringExtra( "name" );
        Toast.makeText( context, "收到的广播="+str, Toast.LENGTH_SHORT ).show();
    }
}

  <activity android:name=".Fragment.Broadcast.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <receiver
            android:name=".Fragment.Broadcast.MyReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="Broadcast.MainActivity"/>
            </intent-filter>
        </receiver>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="发送一般广播"
        android:onClick="bt1_OnClick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="动态注册广播接收器"
        android:onClick="bt2_OnClick"/>
</LinearLayout>