4. 【强制】避免在 Service#onStartCommand()/onBind()方法中执行耗时操作,如果确
实有需求,应改用 IntentService 或采用其他异步机制完成。
正例:
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void startIntentService(View source) {
Intent intent = new Intent(this, MyIntentService.class);
startService(intent);
}
}
public class MyIntentService extends IntentService {
public MyIntentService() {
super("MyIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
synchronized (this) {
try {
......
} catch (Exception e) {
}
}
}
}
5. 【强制】 避免在BroadcastReceiver#onReceive()中执行耗时操作,如果有耗时工作,
应该创建IntentService 完成,而不应该在 BroadcastReceiver 内创建子线程去做。
说明:
由于该方法是在主线程执行,如果执行耗时操作会导致 UI 不流畅。可以使用
IntentService 、 创 建 HandlerThread 或者调用 Context#registerReceiver
(BroadcastReceiver, IntentFilter, String, Handler)方法等方式,在其他Wroker线程
执行onReceive 方法。BroadcastReceiver#onReceive()方法耗时超过 10 秒钟,可
能会被系统杀死。
正例:
IntentFilter filter = new IntentFilter();
filter.addAction(LOGIN_SUCCESS);
this.registerReceiver(mBroadcastReceiver, filter);
mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Intent userHomeIntent = new Intent();
userHomeIntent.setClass(this, UseHomeActivity.class);
this.startActivity(userHomeIntent);
}
};
反例:
mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
MyDatabaseHelper myDB = new MyDatabaseHelper(context);
myDB.initData();
// have more database operation here
}
}; |