触发按钮点击在Android的后退按钮功能 [英] Trigger back-button functionality on button click in Android

问题描述

我知道我们有后退按钮在Android的移动我们回到了previous形式，但我的团队负责人要求把上的按钮单击后退按钮功能

I know we have back button in android to move us back on the previous form, but my team leader asked to put a back button functionality on button click

我怎样才能做到这一点？

How can I do this?

推荐答案

您应该使用完成（）时，为了去到$用户点击该按钮p $ pvious活动。

You should use finish() when the user clicks on the button in order to go to the previous activity.

Button backButton = (Button)this.findViewById(R.id.back);
backButton.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(View v) {
    finish();
  }
});

另外，如果你真的需要，你可以尝试触发自己的返回键preSS：

Alternatively, if you really need to, you can try to trigger your own back key press:

this.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK));
this.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK));

执行这两个。

Execute both of these.

这篇关于触发按钮点击在Android的后退按钮功能的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！