public class MainActivity extends Activity {          @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);              Button button = (Button) findViewById(R.id.button);          button.setOnClickListener(new OnClickListener() {                  @Override              public void onClick(View v) {                  Toast toast = Toast.makeText(MainActivity.this, "abcdefg",                          Toast.LENGTH_LONG);                  showToast(toast, 10); // 显示10秒              }          });      }          /**      *       * @param toast      * @param second      */      private void showToast(final Toast toast, final int second) {          new Thread(new Runnable() {              int tempSecond = 0;                @Override              public void run() {                  while (tempSecond < second) {                      toast.show();                      try {                          Thread.sleep(1000);                      } catch (InterruptedException e) {                      }                      tempSecond++;                  }                  toast.cancel();              }          }).start();      }

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