Toast 封装，避免Toast消息覆盖，无阻塞，等强大功能

 

 

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import android.content.Context;  import android.os.Handler;  import android.os.Looper;  import android.widget.Toast;      /**   * Toast工具类   * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>   * @version 2012-5-21 下午9:21:01   */  public class ToastUtils {       private static Handler handler = new Handler(Looper.getMainLooper());       private static Toast toast = null ;       private static Object synObj = new Object();           /**       * Toast发送消息，默认Toast.LENGTH_SHORT       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:13:10       * @param act       * @param msg       */       public static void showMessage( final Context act, final String msg) {           showMessage(act, msg, Toast.LENGTH_SHORT);       }               /**       * Toast发送消息，默认Toast.LENGTH_LONG       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:13:10       * @param act       * @param msg       */       public static void showMessageLong( final Context act, final String msg) {           showMessage(act, msg, Toast.LENGTH_LONG);       }           /**       * Toast发送消息，默认Toast.LENGTH_SHORT       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:13:35       * @param act       * @param msg       */       public static void showMessage( final Context act, final int msg) {           showMessage(act, msg, Toast.LENGTH_SHORT);       }               /**       * Toast发送消息，默认Toast.LENGTH_LONG       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:13:35       * @param act       * @param msg       */       public static void showMessageLong( final Context act, final int msg) {           showMessage(act, msg, Toast.LENGTH_LONG);       }           /**       * Toast发送消息       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:14:09       * @param act       * @param msg       * @param len       */       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();       }               /**       * Toast发送消息       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:14:27       * @param act       * @param msg       * @param len       */       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();       }           /**       * 关闭当前Toast       * @author WikerYong   Email:<a href="#">yw_312@foxmail.com</a>       * @version 2012-5-22 上午11:14:45       */       public static void cancelCurrentToast() {           if (toast != null ) {               toast.cancel();           }       }  }