Toast toast=Toast.makeText(MainActivity.this, "成功!即将退出程序...", Toast.LENGTH_SHORT);
toast.show();
System.exit(0);
大致是执行某个操作以后,我想弹出消息提示框,然后退出程序,但是这样消息提示框就显示不出来,把最后一句删掉变成:
Toast toast=Toast.makeText(MainActivity.this, "成功!即将退出程序...", Toast.LENGTH_SHORT);
toast.show();
消息提示框就出来了
删除无关部分以后,代码如下:
package ...
import ...
public class MainActivity extends Activity {
Button button;
...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)findViewById(R.id.button);
...
button.setOnClickListener(new MyClick());
}
class MyClick implements View.OnClickListener {
public void onClick(View v){
...
Toast toast=Toast.makeText(MainActivity.this, "成功!即将退出程序...", Toast.LENGTH_SHORT);
toast.show();
System.exit(0);
}
}
}