[java]
Exit exit = new Exit();
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
pressAgainExit();
return true;
}
return super.onKeyDown(keyCode, event);
}
private void pressAgainExit() {
if (exit.isExit()) {
finish();
} else {
Toast.makeText(getApplicationContext(), "再按一次退出程序",
1000).show();
exit.doExitInOneSecond();
}
}
辅助类Exit.java
[java]
package com.chen.b;
import android.os.Handler;
import android.os.HandlerThread;
public class Exit {
private boolean isExit = false;
private Runnable task = new Runnable() {
@Override
public void run() {
isExit = false;
}
};
public void doExitInOneSecond() {
isExit = true;
HandlerThread thread = new HandlerThread("doTask");
thread.start();
new Handler(thread.getLooper()).postDelayed(task, 1000);
}
public boolean isExit() {
return isExit;
}www.2cto.com
public void setExit(boolean isExit) {
this.isExit = isExit;
}
}
作者：chenshijun0101
