Android-有序广播

package liudeli.croadcast1;

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

/**
 * 定义 接收者
 */
public class MyBroadcastReceiver extends BroadcastReceiver {

    private final String TAG = MyBroadcastReceiver.class.getSimpleName();

    /**
     * 接收的方法
     * @param context 传递过来的上下文
     * @param intent 传递过来的意图，可以获取很多信息
     */
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d(TAG, "【111】intent.getAction():" + intent.getAction());
        Log.d(TAG, "【111】intent.getDataString():" + intent.getDataString());

        // 真实开发中是这样写的
        if ("my.MyBroadcastReceiver.custom.action2".equals(intent.getAction())) {
            String data = intent.getDataString();
            String[] dataArray = data.split(":");
            Log.d(TAG, "【111】data:" + dataArray[1]);
            Log.d(TAG, "【111】music:" + intent.getStringExtra("music"));
        } else if ("xxx.action".equals(intent.getAction())) {
            // 做相应的业务逻辑处理
            // ...
        } else if ("xxx.action".equals(intent.getAction())) {
            // 做相应的业务逻辑处理
            // ...
        }
    }
}

package liudeli.croadcast1;

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

/**
 * 定义 接收者
 */
public class MyBroadcastReceiver2 extends BroadcastReceiver {

    private final String TAG = MyBroadcastReceiver.class.getSimpleName();

    /**
     * 接收的方法
     * @param context 传递过来的上下文
     * @param intent 传递过来的意图，可以获取很多信息
     */
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d(TAG, "【222】intent.getAction():" + intent.getAction());
        Log.d(TAG, "【222】intent.getDataString():" + intent.getDataString());

        // 真实开发中是这样写的
        if ("my.MyBroadcastReceiver.custom.action2".equals(intent.getAction())) {
            String data = intent.getDataString();
            String[] dataArray = data.split(":");
            Log.d(TAG, "【222】data:" + dataArray[1]);
            Log.d(TAG, "【222】music:" + intent.getStringExtra("music"));
        } else if ("xxx.action".equals(intent.getAction())) {
            // 做相应的业务逻辑处理
            // ...
        } else if ("xxx.action".equals(intent.getAction())) {
            // 做相应的业务逻辑处理
            // ...
        }
    }
}

package liudeli.croadcast1;

import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;

public class NewActivity2 extends Activity {

    private MyBroadcastReceiver myBroadcastReceiver;
    private MyBroadcastReceiver2 myBroadcastReceiver2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_new2);

        /**
         * 【Java代码方式订阅 接收者】
         * 唯一可以new的组件就是 广播 接收者
         */
        myBroadcastReceiver = new MyBroadcastReceiver();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("my.MyBroadcastReceiver.custom.action.sendOrderBroadcast");
        intentFilter.addDataScheme("zhangyusheng"); // 注意：这里不能加 :
        intentFilter.setPriority(88); // 在订阅的时候给自己设置优先级别 -1000 --> 1000
        registerReceiver(myBroadcastReceiver, intentFilter);

        /**
         * 【Java代码方式订阅 接收者】
         * 唯一可以new的组件就是 广播 接收者
         */
        myBroadcastReceiver2 = new MyBroadcastReceiver2();
        IntentFilter intentFilter2 = new IntentFilter();
        intentFilter2.addAction("my.MyBroadcastReceiver.custom.action.sendOrderBroadcast");
        intentFilter2.addDataScheme("zhangyusheng"); // 注意：这里不能加 :
        intentFilter2.setPriority(1000); // 在订阅的时候给自己设置优先级别 -1000 --> 1000
        registerReceiver(myBroadcastReceiver2, intentFilter2);
    }

    /**
     * 发送有序广播
     */
    public void sendOrderBroadcast(View view) {
        /**
         * 接收者是这样订阅的：怎么订阅，就怎么发送
         *         IntentFilter intentFilter = new IntentFilter();
         *         intentFilter.addAction("my.MyBroadcastReceiver.custom.action.sendOrderBroadcast");
         *         intentFilter.addDataScheme("zhangyusheng"); // 注意：这里不能加 :
         */
        Intent intent = new Intent();
        intent.setAction("my.MyBroadcastReceiver.custom.action.sendOrderBroadcast");
        intent.setData(Uri.parse("zhangyusheng:亚洲第一男高音")); // 注意：要加 :
        intent.putExtra("music", "我期待 作词作曲 张雨生"); // 而外携带值

        // 参数一：意图    参数二：谁能接收我的广播(自定义权限)
        sendOrderedBroadcast(intent, null);
    }

    /**
     * Java方式订阅接收者后 必须要解除订阅
     */
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (myBroadcastReceiver != null)
            unregisterReceiver(myBroadcastReceiver);

        if (myBroadcastReceiver2 != null)
            unregisterReceiver(myBroadcastReceiver2);
    }
}