android.os.Handler.hasMessages()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中android.os.Handler.hasMessages()方法的一些代码示例，展示了Handler.hasMessages()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Handler.hasMessages()方法的具体详情如下：
包路径：android.os.Handler
类名称：Handler
方法名：hasMessages

Handler.hasMessages介绍

暂无

代码示例

代码示例来源：origin: naman14/Timber

private static void releaseWakeLockIfHandlerIdle() {
  if (mHandler.hasMessages(MSG_LONGPRESS_TIMEOUT)
      || mHandler.hasMessages(MSG_HEADSET_DOUBLE_CLICK_TIMEOUT)) {
    if (DEBUG) Log.v(TAG, "Handler still has messages pending, not releasing wake lock");
    return;
  }
  if (mWakeLock != null) {
    if (DEBUG) Log.v(TAG, "Releasing wake lock");
    mWakeLock.release();
    mWakeLock = null;
  }
}

代码示例来源：origin: aa112901/remusic

private static void releaseWakeLockIfHandlerIdle() {
  if (mHandler.hasMessages(MSG_LONGPRESS_TIMEOUT)
      || mHandler.hasMessages(MSG_HEADSET_DOUBLE_CLICK_TIMEOUT)) {
    if (DEBUG) Log.v(TAG, "Handler still has messages pending, not releasing wake lock");
    return;
  }
  if (mWakeLock != null) {
    if (DEBUG) Log.v(TAG, "Releasing wake lock");
    mWakeLock.release();
    mWakeLock = null;
  }
}

代码示例来源：origin: aa112901/remusic

private void onProgressChanged() {
    if (mProgressStyle == STYLE_HORIZONTAL) {
      if (mViewUpdateHandler != null && !mViewUpdateHandler.hasMessages(0)) {
        mViewUpdateHandler.sendEmptyMessage(0);
      }
    }
  }
}

代码示例来源：origin: seven332/EhViewer

private void onProgressChanged() {
    if (mProgressStyle == STYLE_HORIZONTAL) {
      if (mViewUpdateHandler != null && !mViewUpdateHandler.hasMessages(0)) {
        mViewUpdateHandler.sendEmptyMessage(0);
      }
    }
  }
}

代码示例来源：origin: sunfusheng/StickyHeaderListView

public void removeBannerLoopMessage() {
  if (mHandler.hasMessages(BANNER_TYPE)) {
    mHandler.removeMessages(BANNER_TYPE);
  }
}

代码示例来源：origin: journeyapps/zxing-android-embedded

private synchronized void autoFocusAgainLater() {
  if (!stopped && !handler.hasMessages(MESSAGE_FOCUS)) {
    handler.sendMessageDelayed(handler.obtainMessage(MESSAGE_FOCUS), AUTO_FOCUS_INTERVAL_MS);
  }
}

代码示例来源：origin: robolectric/robolectric

@Test
public void removeMessage_withSpecifiedObject() throws Exception {
 ShadowLooper.pauseMainLooper();
 Handler handler = new Handler();
 Message.obtain(handler, 123, "foo").sendToTarget();
 Message.obtain(handler, 123, "bar").sendToTarget();
 assertThat(handler.hasMessages(123)).isTrue();
 assertThat(handler.hasMessages(123, "foo")).isTrue();
 assertThat(handler.hasMessages(123, "bar")).isTrue();
 assertThat(handler.hasMessages(123, "baz")).isFalse();
 handler.removeMessages(123, "foo");
 assertThat(handler.hasMessages(123)).isTrue();
 handler.removeMessages(123, "bar");
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void sendEmptyMessage_addMessageToQueue() {
 ShadowLooper.pauseMainLooper();
 Handler handler = new Handler();
 assertThat(handler.hasMessages(123)).isFalse();
 handler.sendEmptyMessage(123);
 assertThat(handler.hasMessages(456)).isFalse();
 assertThat(handler.hasMessages(123)).isTrue();
 ShadowLooper.idleMainLooper(0);
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void resetThreadLoopers_clears_messages() {
 HandlerThread backgroundThread = new HandlerThread("resetTest");
 backgroundThread.start();
 Looper backgroundLooper = backgroundThread.getLooper();
 Handler handler = new Handler(backgroundLooper);
 for (int i = 0; i < 5; i++) {
  handler.sendEmptyMessageDelayed(1, 100);
  ShadowLooper.resetThreadLoopers();
  assertThat(handler.hasMessages(1)).isFalse();
 }
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testHasMessagesWithWhatAndObject() {
 ShadowLooper.pauseMainLooper();
 Object testObject = new Object();
 Handler handler = new Handler();
 Message message = handler.obtainMessage(123, testObject);
 assertFalse(handler.hasMessages(123, testObject));
 handler.sendMessage(message);
 assertTrue(handler.hasMessages(123, testObject));
}

代码示例来源：origin: robolectric/robolectric

@Test
public void removeMessages_takesMessageOutOfQueue() {
 ShadowLooper.pauseMainLooper();
 Handler handler = new Handler();
 handler.sendEmptyMessageDelayed(123, 500);
 handler.removeMessages(123);
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testSendToTarget() throws Exception {
 ShadowLooper.pauseMainLooper();
 Handler h = new Handler();
 Message.obtain(h, 123).sendToTarget();
 assertThat(h.hasMessages(123)).isTrue();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void sendEmptyMessageDelayed_sendsMessageAtCorrectTime() {
 ShadowLooper.pauseMainLooper();
 Handler handler = new Handler();
 handler.sendEmptyMessageDelayed(123, 500);
 assertThat(handler.hasMessages(123)).isTrue();
 ShadowLooper.idleMainLooper(100);
 assertThat(handler.hasMessages(123)).isTrue();
 ShadowLooper.idleMainLooper(400);
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void sendMessageAtTime_sendsMessageAtCorrectTime() {
 ShadowLooper.pauseMainLooper();
 Handler handler = new Handler();
 Message message = handler.obtainMessage(123);
 handler.sendMessageAtTime(message, 500);
 assertThat(handler.hasMessages(123)).isTrue();
 ShadowLooper.idleMainLooper(100);
 assertThat(handler.hasMessages(123)).isTrue();
 ShadowLooper.idleMainLooper(400);
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testSendToTarget() {
 ShadowLooper.pauseMainLooper();
 Object testObject = new Object();
 Handler handler = new Handler();
 Message message = handler.obtainMessage(123, testObject);
 assertThat(handler).isEqualTo(message.getTarget());
 message.sendToTarget();
 assertTrue(handler.hasMessages(123, testObject));
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testMessengerSend() throws Exception {
 Handler handler = new Handler();
 Messenger messenger = new Messenger(handler);
 ShadowLooper.pauseMainLooper();
 Message msg = Message.obtain(null, 123);
 messenger.send(msg);
 assertThat(handler.hasMessages(123)).isTrue();
 Looper looper = Looper.myLooper();
 shadowOf(looper).runOneTask();
 assertThat(handler.hasMessages(123)).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testSendMessageAtFrontOfQueueThenRunMainLooperOneMsgAtATime_shouldRunFrontOfQueueMsgFirst() throws Exception {
 Handler handler = new Handler();
 ShadowLooper.pauseMainLooper();
 // Post two messages to handler. Handle first message and confirm that msg posted
 // to front is removed.
 handler.obtainMessage(123).sendToTarget();
 Message frontMsg = handler.obtainMessage(345);
 boolean result = handler.sendMessageAtFrontOfQueue(frontMsg);
 assertTrue(result);
 assertTrue(handler.hasMessages(123));
 assertTrue(handler.hasMessages(345));
 ShadowLooper.runMainLooperOneTask();
 assertTrue(handler.hasMessages(123));
 assertFalse(handler.hasMessages(345));
 ShadowLooper.runMainLooperOneTask();
 assertFalse(handler.hasMessages(123));
 assertFalse(handler.hasMessages(345));
}

代码示例来源：origin: moagrius/TileView

private void updateViewportAndComputeTilesThrottled() {
 if (!mRenderThrottle.hasMessages(RENDER_THROTTLE_ID)) {
  mRenderThrottle.sendEmptyMessageDelayed(RENDER_THROTTLE_ID, RENDER_THROTTLE_INTERVAL);
 }
}

代码示例来源：origin: iielse/ImageWatcher

@Override
public boolean onSingleTapUp(MotionEvent e) {
  boolean hadTapMessage = mHandler.hasMessages(SINGLE_TAP_UP_CONFIRMED);
  if (hadTapMessage) {
    mHandler.removeMessages(SINGLE_TAP_UP_CONFIRMED);
    handleDoubleTapTouchResult();
    return true;
  } else {
    mHandler.sendEmptyMessageDelayed(SINGLE_TAP_UP_CONFIRMED, 350);
  }
  return false;
}

代码示例来源：origin: infinum/android_dbinspector

/**
   * Posts a message to bind the preferences to the list view.
   * <p/>
   * Binding late is preferred as any custom preference types created in {@link #onCreate(Bundle)} are able to have their views recycled.
   */
  private void postBindPreferences() {
    if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) {
      return;
    }
    mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget();
  }
}

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