安卓开发之有序广播

package com.lidaochen.test001;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    // 点击按钮发送有序广播 发大米
    public void click(View v)
    {
        Intent intent = new Intent();
        intent.setAction("com.lidaochen.sendrice");
        /*
         * intent  意图
         *
         * receiverPermission   接收的权限
         *
         * resultReceiver 最终的receiver
         *
         * scheduler  handler
         *
         * initialCode  初始码
         * initialData  初始化数据
         */
        sendOrderedBroadcast(intent, null, new FinalReceiver(), null, 1, "习大大给每个农民发了1000斤大米", null);
    }
}

package com.lidaochen.test001;

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

public class FinalReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取发送广播携带的数据
        String content = getResultData();
        // 显示结果
        Toast.makeText(context, "报告习大大：" + content, Toast.LENGTH_SHORT).show();
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.lidaochen.test002">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <receiver
            android:name=".ProvienceReceiver"
            android:enabled="true"
            android:exported="true">
            <!--这里需要设置优先级 优先级越高 越早收到广播-->
            <intent-filter android:priority="1000">
                <action android:name="com.lidaochen.sendrice"></action>
            </intent-filter>
        </receiver>

        <receiver
            android:name=".CityReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter android:priority="500">
                <action android:name="com.lidaochen.sendrice"></action>
            </intent-filter>
        </receiver>

        <receiver
            android:name=".CountryReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter android:priority="100">
                <action android:name="com.lidaochen.sendrice"></action>
            </intent-filter>
        </receiver>

        <receiver
            android:name=".NongMinReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter android:priority="-100">
                <action android:name="com.lidaochen.sendrice"></action>
            </intent-filter>
        </receiver>
    </application>

</manifest>

package com.lidaochen.test002;

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

public class ProvienceReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取广播发送的数据
        String content = getResultData();
        //  显示结果
        Toast.makeText(context, "省：" + content, Toast.LENGTH_SHORT).show();
        //  终止广播 这里终止了广播 后面的广播接收者都收不到了
        // abortBroadcast();
        // 修改数据
        setResultData("习大大给每个农民发了500斤大米！");
    }
}

package com.lidaochen.test002;

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

public class CityReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取发送广播携带的数据
        String content = getResultData();
        // 显示结果
        Toast.makeText(context, "市：" + content, Toast.LENGTH_SHORT).show();
        // 修改数据
        setResultData("习大大给每个农民发了200斤大米！");
    }
}

package com.lidaochen.test002;

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

public class CountryReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取发送广播携带的数据
        String content = getResultData();
        // 显示结果
        Toast.makeText(context, "乡：" + content, Toast.LENGTH_SHORT).show();
        // 修改数据
        setResultData("习大大给每个农民发了10斤大米！");
    }
}

package com.lidaochen.test002;

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

public class NongMinReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取发送广播携带的数据
        String content = getResultData();
        // 显示结果
        Toast.makeText(context, "农民：" + content, Toast.LENGTH_SHORT).show();
    }
}