开机关机广播和电量变化广播

广播的使用步骤：

1.注册（在AndroidManifest.xml中声明receiver或者手动调用registerReceiver方法）；

2.声明权限；

3.实现广播；

4.取消注册（和注册需要一对一调用）；

注册：

mContext.registerReceiver(mVoltageCheck, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
mContext.registerReceiver(ShutdownReceiver, new IntentFilter(Intent.ACTION_SHUTDOWN));

取消注册：

mContext.unregisterReceiver(mVoltageCheck);
mContext.unregisterReceiver(ShutdownReceiver);

声明权限：

<uses-permission android:name="android.permission.SHUTDOWN"/>

实现：

关机广播

private BroadcastReceiver ShutdownReceiver = new BroadcastReceiver() {
final static String TAG = "ShutdownReceiver";
final static String onReceive = "onReceive";
final static String ACTION = "android.intent.action.ACTION_SHUTDOWN";//截取关机事件

@Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
Log.d(TAG,onReceive);
if (arg1.getAction().equals(ACTION)) {
Log.e(TAG,"imageCount = "+imageCount);
stop = false;
}
Log.e(TAG,ACTION);
}
};

监测电量广播：

private BroadcastReceiver mVoltageCheck = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
// 电压 电池电量
Log.i(TAG,"ACTION_BATTERY_CHANGED");
int level = intent.getIntExtra("level", -1);
int voltage = intent.getIntExtra("voltage", 0);
Log.i(TAG,"level = "+level);
Log.i(TAG,"voltage = "+voltage);
if(voltage == 0){
......
}
}
}
};

开机广播：

权限

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>

注册：

<receiver android:name="com.pax.reboot.BootBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/   >
</intent-filter>
</receiver>

实现：

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

public class BootBroadcastReceiver extends BroadcastReceiver {
final static String TAG = "BootBroadcastReceiver";
final static String ACTION = "android.intent.action.BOOT_COMPLETED";

@Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
Log.e(TAG,"onReceive");                if(arg1.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Intent intent = new Intent(arg0, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
arg0.startActivity(intent);
}
}
}