座后退按钮在安卓

本文介绍了座后退按钮在安卓的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想从回到其他活动阻止硬件后退按钮在Android中，以prevent .. 在此先感谢...

I want to block hardware back button in android ,in order to prevent from going back to other activity.. Thanks in advance...

推荐答案

下面是code，可让您正确处理活动的返回键上的所有平台版本：

Here is code that allows you to handle the back key in an activity correctly on all versions of the platform:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event)  {
    if (  Integer.valueOf(android.os.Build.VERSION.SDK) < 7 //Instead use android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.ECLAIR
            && keyCode == KeyEvent.KEYCODE_BACK
            && event.getRepeatCount() == 0) {
        // Take care of calling this method on earlier versions of
        // the platform where it doesn't exist.
        onBackPressed();
    }

    return super.onKeyDown(keyCode, event);
}

@Override
public void onBackPressed() {
    // This will be called either automatically for you on 2.0
    // or later, or by the code above on earlier versions of the
    // platform.
    return;
}

sources:http://android-developers.blogspot.com/2009/12/back-and-other-hard-keys-three-stories.html

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