Android 发送自定义广播(标准和本地)

1、首先自定义一个广播接收器：MyBroadcastReceiver

package example.com.mybroadcastreceiver;

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

public class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context,"received in MyBroadcastReceiver",Toast.LENGTH_SHORT).show();
    }
}

2、修改AndroidManifest中的代码：

        <receiver
            android:name=".MyBroadcastReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="example.com.mybroadcastreceiver.MY_BROADCAST"/>
            </intent-filter>
        </receiver>

3、为主活动添加一个按钮：

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Send Broadcast"/>

4、为按钮绑定点击事件：

package example.com.mybroadcastreceiver;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //构建一个Intent对象，并把要发送的广播值传进去。
                Intent intent = new Intent("example.com.mybroadcastreceiver.MY_BROADCAST");
                //调用Context的sendBroadcast()方法，将广播发送出去。所有监听这条广播的接收器就都会接收到这条广播。
                sendBroadcast(intent);
            }
        });
    }
}

 

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5、发送有序广播：新建一个项目，自定义一个广播接收器，用于接收上面的广播。

package example.com.broadcasttest02;

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

public class AnotherBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context,"received in AnotherBroadcastReceiver",Toast.LENGTH_SHORT).show();
    }
}

6、不要忘记在AndroidManifest中注册：

        <receiver
            android:name=".AnotherBroadcastReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="example.com.broadcasttest02.MY_BROADCAST"/>
            </intent-filter>
        </receiver>

7、