有序广播 ，有序广播实例

有序广播：按照接收者的优先级接收，只有一个广播接收者能接收信息，在此广播接收者的逻辑执行完毕后，才会继续传递。

abortBroadcast（）；终止广播

有序广播功能概述：

 广播类型：

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btn"
        android:text="发送有序广播"
      />


</LinearLayout>

MainActivity.java

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
 MyReceiverOne one ;
 MyReceiverTow two;
 MyReceiverThree three;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        registerReceiver();

        Button button =findViewById(R.id.btn);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent=new Intent();
                intent.setAction("Intercept_Stitch");
                sendOrderedBroadcast(intent,null);
            }
        });
    }

    private void registerReceiver() {
        one=new MyReceiverOne();
        IntentFilter filter1=new IntentFilter();
        filter1.setPriority(1000);
        filter1.addAction("Intercept_Stitch");
        registerReceiver(one,filter1);

        two=new MyReceiverTow();
        IntentFilter filter2=new IntentFilter();
        filter2.setPriority(900);
        filter2.addAction("Intercept_Stitch");
        registerReceiver(two,filter2);

        three=new MyReceiverThree();
        IntentFilter filter3=new IntentFilter();
        filter3.setPriority(600);
        filter3.addAction("Intercept_Stitch");
        registerReceiver(three,filter3);
    }



}

MyReceiverOne

package com.example.myapplication;

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

class MyReceiverOne extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("test","自定义的广播接收者One，接受到了广播事件");
    }
}

MyRiverTwo

package com.example.myapplication;

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

class MyReceiverTow extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("test","自定义的广播接收者Two，接受到了广播事件");
    }
}

MyReceiverThree

package com.example.myapplication;

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

class MyReceiverThree extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("test","自定义的广播接收者Three，接受到了广播事件");
    }
}