任务内容：
一，发送有序广播对应的布局页面：
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_exe" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:background="@drawable/stitch_one" tools:context="com.example.administrator.hello.Exe"> <Button android:text="发送有序广播" android:textSize="35dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_marginTop="100dp" android:id="@+id/button" /> </RelativeLayout>
二、发送广播，当点击button按钮时，触发点击事件，会发送一条广播。
public class Exe extends AppCompatActivity { private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_exe); button = (Button) findViewById(R.id.button); button.setOnClickListener(new send()); } private class send implements View.OnClickListener { @Override public void onClick(View v) { Intent intent = new Intent("Intercept_Stitch"); sendOrderedBroadcast(intent,null); } } } 三，接受广播，即添加广播接受者。
1.第一个接受者。 public class MyBroadReceiverOne extends BroadcastReceiver { public MyBroadReceiverOne() { } @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. Log.d("MyBroadReceiverOne","自定义的广播接受者01，接受到了自定义的广播事件"); } } 2.第二个接受者。
public class MyBroadReceiverTwo extends BroadcastReceiver { public MyBroadReceiverTwo() { } @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. Log.d("MyBroadReceiverTwo","自定义的广播接受者02，接受到了自定义的广播事件"); } } 3.第三个接受者
public class MyBroadReceiverThree extends BroadcastReceiver { public MyBroadReceiverThree() { } @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. Log.d("MyBroadReceiverThree","自定义的广播接受者03，接受到了自定义的广播事件"); } } 四,三个广播接受者创建后，需要在清单文件中注册并设置他们的优先级。(android:priority属性指定了广播事件的优先级，优先级由高到底依次为：接受者01,接受者03,接受者02，并且要为这三个接受者定义监听的广播事件action为"Intercept_Stitch")
<receiver android:name=".MyBroadReceiverOne" android:enabled="true" android:exported="true"> <intent-filter android:priority="800"> <action android:name="Intercept_Stitch"/> </intent-filter> </receiver> <receiver android:name=".MyBroadReceiverTwo" android:enabled="true" android:exported="true"> <intent-filter android:priority="200"> <action android:name="Intercept_Stitch"/> </intent-filter> </receiver> <receiver android:name=".MyBroadReceiverThree" android:enabled="true" android:exported="true"> <intent-filter android:priority="600"> <action android:name="Intercept_Stitch"/> </intent-filter> </receiver>
所以当点击发送按钮时，按照优先级，他们的接受并弹出提示的顺序为01，03，02。
