android Toast显示延迟的优化方案

在android中，当点击一个按钮显示toast时，若连续点击，那么toast也会一直闪现，当停止点击时还是在显示，为了防止这种情况出现，需要对其进行优化，若直接使用Toast.cancel()方法会不起作用，因此要自定义一个类，将其封装、重写。如下内容
public class ToastUtil { private static Handler handler = new Handler(Looper.getMainLooper()); private static Toast toast = null; private static Object synObj = new Object(); public static void showMessage(final Context act, final String msg) { showMessage(act, msg, Toast.LENGTH_SHORT); } public static void showMessage(final Context act, final int msg) { showMessage(act, msg, Toast.LENGTH_SHORT); } public static void showMessage(final Context act, final String msg, final int len) { new Thread(new Runnable() { public void run() { handler.post(new Runnable() { @Override public void run() { synchronized (synObj) { if (toast != null) { toast.cancel(); toast.setText(msg); toast.setDuration(len); } else { toast = Toast.makeText(act, msg, len); } toast.show(); } } }); } }).start(); } public static void showMessage(final Context act, final int msg, final int len) { new Thread(new Runnable() { public void run() { handler.post(new Runnable() { @Override public void run() { synchronized (synObj) { if (toast != null) { toast.cancel(); toast.setText(msg); toast.setDuration(len); } else { toast = Toast.makeText(act, msg, len); } toast.show(); } } }); } }).start(); } } 使用时，只需调用该类中的方法即可。虽然感觉逻辑合理，但还是在运行时还是会有bug出现，希望有谁解决掉了可以分享。
转自：http://www.2cto.com/kf/201111/112527.html