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最新文章列表
Display back button on action bar and back event
原文地址:
https://stackoverflow.com/a/37185334
I think onSupportNavigateUp() is best and Easiest way to do so
check the code below
if you want it programmatically Add this line in onCreate() method
getSup ...
Android 点击back键两次退出程序
Android中为了界面上的简洁,可以通过点击两次back键退出程序,而不用退出按钮。ok,直接上代码
private long exitTime = 0;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
ExitApp();
return false;
}
public ...
Android按back键退到后台
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == 4){
moveTaskToBack(true);
}
return super.onKeyDown(keyCode, event);
}
即可
方法2:
Android应用开发中, 有一种场景,就是我们不希望用户直接按Back键退 ...
再按一次后退键退出应用程序
long lastTouchBackTime = 0L;
long nowTime = 0L;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
nowTime = System.currentTimeMillis();
...