发送和接收广播
布局代码:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.Test.MainActivity"
tools:ignore="MergeRootFrame" >
<Button
android:id="@+id/bt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:text="广播" />
</LinearLayout>
完整代码:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.bt);//获取按钮
button.setOnClickListener(new View.OnClickListener() {//设置单击事件
@Override
public void onClick(View v) {
Intent intent = new Intent();//创建Intent对象
intent.setAction("com.mingrisoft");//为Intent添加动作com.mingrisoft
sendBroadcast(intent);//发送广播
}
});
}
}
设置接收器:
public class MyReceiver extends BroadcastReceiver{
private static final String action1="com.mingrisoft";//声明第一个动作
private static final String action2="mingrisoft";//声明第二个动作
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(action1)) {
Toast.makeText(context, "MyReceiver收到com.mingrisoft广播", Toast.LENGTH_SHORT).show();//回复收到广播
}else if (intent.getAction().equals(action2)) {
Toast.makeText(context, "MyReceiver收到mingrisoft广播", Toast.LENGTH_SHORT).show();
}
}
}
重要点:在AndroidManifest.xml文件中注册BroadcastReceiver