学步园

<application android:icon="@drawable/icon" android:label="broadcast"><br /> <activity android:name="com.example.app.BroadcastSenderDemo"><br /> <intent-filter><br /> <action android:name="android.intent.action.MAIN"></action><br /> <category android:name="android.intent.category.LAUNCHER"></category><br /> </intent-filter><br /> </activity><br /> <!-- android:name是包名+类 --><br /> <receiver android:name="com.example.demo.BroadcastReceiverDemo"><br /> <intent-filter><br /> <action android:name="com.receiver.action.TestAction"/><br /> </intent-filter><br /> </receiver><br /> </application>

如果要给应用程序添加 BroadCast 则需要配置相关规则

<receiver android:name="com.example.demo.BroadcastReceiverDemo"><br /> <intent-filter><br /> <action android:name="com.receiver.action.TestAction"/><br /> </intent-filter><br /> </receiver><br />

其中接收 receiver 的name是一个继承了BroadcastReceiver的类

package com.android.demo;</p> <p>import android.app.Activity;<br /> import android.app.Notification;<br /> import android.app.NotificationManager;<br /> import android.app.PendingIntent;<br /> import android.content.BroadcastReceiver;<br /> import android.content.Context;<br /> import android.content.Intent;</p> <p>public class BroadcastReceiverDemo extends BroadcastReceiver{</p> <p> @Override<br /> public void onReceive(Context context, Intent intent) {<br /> //创建通知管理器<br /> NotificationManager nm = (NotificationManager) context.getSystemService(Activity.NOTIFICATION_SERVICE);<br /> //创建通知<br /> Notification notification = new Notification(com.example.R.drawable.icon,"hello",System.currentTimeMillis());<br /> //重新定义该方法中的intent参数对象<br /> //该Intent使得当用户点击该通知后发出这个Intent<br /> intent = new Intent(context,BroadcastSenderDemo.class);<br /> //请注意，如果要以该Intent启动一个Activity，一定要设置 Intent.FLAG_ACTIVITY_NEW_TASK 标记<br /> intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);<br /> // PendingIntent.FLAG_UPDATE_CURRENT表示：如果描述的PendingIntent已存在，则改变已存在的PendingIntent的Extra数据为新的PendingIntent的Extra数据<br /> PendingIntent contentIntent = PendingIntent.getActivity(context,0,intent, PendingIntent.FLAG_UPDATE_CURRENT);<br /> notification.setLatestEventInfo(context, "xxx", "helloworld", contentIntent);<br /> //FLAG_ONGOING_EVENT使得通知出现在"正在运行"栏目中<br /> notification.flags = Notification.FLAG_ONGOING_EVENT;<br /> nm.notify(0x0, notification);<br /> }</p> <p>}<br />

其中如果想要实现 单击状态栏里的通知 跳转到程序界面

则需要配置  intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

传播 broadcast 的源码：

package com.android.demo;</p> <p>import android.app.Activity;<br /> import android.app.NotificationManager;<br /> import android.content.Intent;<br /> import android.os.Bundle;<br /> import android.view.View;<br /> import android.view.View.OnClickListener;<br /> import android.view.ViewGroup.LayoutParams;<br /> import android.widget.Button;<br /> import android.widget.LinearLayout;<br /> /**<br /> * 发送广播<br /> * @author wangtao<br /> */<br /> public class BroadcastSenderDemo extends Activity{</p> <p> @Override<br /> protected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> /* 在AndroidManifest中需要配置<br /> <receiver android:name="com.example.demo.BroadcastReceiverDemo"><br /> <intent-filter><br /> <action android:name="com.receiver.action.TestAction"/><br /> </intent-filter><br /> </receiver><br /> */<br /> //发送广播<br /> final Intent intent = new Intent("com.receiver.action.TestAction");<br /> //布局<br /> LinearLayout lineLayout = new LinearLayout(this);<br /> //组件<br /> Button button = new Button(this);<br /> button.setText("发送广播,通知接受响应");<br /> button.setOnClickListener(new OnClickListener() {<br /> @Override<br /> public void onClick(View v) {<br /> //发送广播<br /> sendBroadcast(intent);<br /> }<br /> });<br /> lineLayout.addView(button);<br /> button = new Button(this);<br /> button.setText("退出");<br /> button.setOnClickListener(new OnClickListener() {<br /> @Override<br /> public void onClick(View v) {<br /> BroadcastSenderDemo.this.finish();<br /> // System.exit(0);<br /> NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);<br /> //消除通知<br /> nm.cancelAll();<br /> }<br /> });<br /> lineLayout.addView(button);<br /> this.addContentView(lineLayout, new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));<br /> }</p> <p>}<br />