Android代码如何监控apk安装_卸载_…

public class GetBroadcast extends BroadcastReceiver {

private static GetBroadcast mReceiver = new
GetBroadcast();
private static IntentFilter mIntentFilter;

public static void registerReceiver(Context context) {
mIntentFilter = new IntentFilter();
mIntentFilter.addDataScheme("package");
mIntentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
mIntentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
mIntentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED);
context.registerReceiver(mReceiver, mIntentFilter);
}

public static void unregisterReceiver(Context context) {
context.unregisterReceiver(mReceiver);
}

@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
Toast.makeText(context, "有应用被添加",
Toast.LENGTH_LONG).show();
} else if (Intent.ACTION_PACKAGE_REMOVED.equals(action))
{
Toast.makeText(context, "有应用被删除",
Toast.LENGTH_LONG).show();
}

else if (Intent.ACTION_PACKAGE_REPLACED.equals(action))
{
Toast.makeText(context, "有应用被替换",
Toast.LENGTH_LONG).show();
}

}

}