本来是测试自定义Toast，发现

implements View.OnClickListener的Onclick事件怎么都不响应，开始以为是自定义的问题。结果当然不是；需要clean项目就好了，AndroidStudio的问题还是很多~

@Override

public void onBackPressed() {

ToastUtils.cancelToast();

super.onBackPressed();

}在onBackPressed方法里面加上取消的代码可以增加用户体验。不会退出界面后还弹出toast

PS：只是一个思路，其实觉得用不上。默认的只有两种时间，退出app的时间间隔已经结束了

没找

public class MainActivity extends AppCompatActivity implements View.OnClickListener, OnTouchListener {

Handler myHandler = new Handler() {

@Override

public void handleMessage(Message msg) {

super.handleMessage(msg);

switch (msg.what) {

case 0x111:

// Toast.makeText(MainActivity.this, "11", Toast.LENGTH_SHORT).show();

// methodlow();

break;

}

}

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button viewById = (Button) findViewById(R.id.bt_toast);

Button button = (Button) findViewById(R.id.button);

viewById.setOnClickListener(MainActivity.this);

button.setOnClickListener(this);

    @Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.bt_toast:

// Toast.makeText(MainActivity.this, "bt_toast", Toast.LENGTH_SHORT).show();

ToastUtils.showToast(MainActivity.this, "点击测试");

break;

case R.id.button:

ToastUtils.showToast(MainActivity.this, "buttonclick");

break;

}

}

package com.tianch.test40.util;

import android.content.Context;

import android.widget.Toast;

/**

* Created by Administrator on 2016/7/28.10

*/

public class ToastUtils {

private static Toast toast;

public static void showToast(Context context,

String content) {

if (toast == null) {

toast = Toast.makeText(context,

content,

Toast.LENGTH_SHORT);

} else {

toast.setText(content);

}

toast.show();

}

public static void cancelToast() {

if (toast != null) {

toast.cancel();

}

}

}