在Android中创建自定义后退按钮 [英] Creating custom back button in android

问题描述

我有一个具有菜单的应用程序，根据您在菜单中按的按钮，将打开一个新活动.我想在每个屏幕上都有一个后退按钮，将您带到上一个屏幕，所以我想知道如何解决这个问题?

I have an application that has a menu and depending on what button you press in the menu a new activity is opened. I want to have a back button on every screen that will bring you to the previous screen so I'm wondering how do I go about this?

这是我使用过的一些有效的代码:

Here is some code I have used that works:

backButton = (ImageButton) findViewById(R.id.back_button);
        backButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {


                finish();

            }
        });

但是，对我来说，将此代码放入我的所有活动中并不是一种很好的编程习惯.我该如何创建某种堆栈来保存所有查看的页面，并使用该堆栈返回上一页?

However its not good programming practice for me to put this code in all my activities. How do I go about creating some kind of stack that saves all the pages viewed and using that to return to the previous page?

我必须在应用程序中放置一个后退按钮，这样我才能在ActionBar中使用现有按钮.

I have to put a back button in my application so I cannot use the existing one in the ActionBar.

推荐答案

您是否尝试过在活动中使用操作栏?在每项活动中使用

Have you tried using action bar in your activity ? use in every activity

ActionBar actionBar = getSupportActionBar();
if(actionBar != null){
    actionBar.setTitle(getResources().getString(R.string.app_name));
    actionBar.setDisplayHomeAsUpEnabled(true);
    actionBar.setIcon(R.drawable.app_icon);
}

并处理

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            finish();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

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