通过软件Android的返回键 [英] Android back key by software

问题描述

道兴有人知道我可以模拟pressing软件返回键？我已经看到了一些应用程序，模拟此键和其他一些按键如家和搜索。但由于theese是不是开源的，我试图建立自己的应用程序，它可以管理theese任务。回到家里的例子是很容易的，因为我不得不派只是一个意向。所以...我能做些什么来模拟返回键？ ：）

Dows anybody know how I can simulate pressing the back key by software? I've seen some applications which simulate this key and a few other keys like home and search. But because theese weren't open source, I tried to build my own application which can manage theese tasks. To go back to home for example is very easy because I had to send just one intent. So... what can I do to simulate the back key? :)

更新：

我已经下载了一个开源的应用程序，它从 http://git.hoopajoo.net/ <具有同样的功能/ A>

I've downloaded an open source application which has the same functions from http://git.hoopajoo.net/

有这就像做了：

Process process = Runtime.getRuntime().exec("su");
OutputStream outputStream = process.getOutputStream();
String cmd = "keycode " + KeyEvent.KEYCODE_BACK;
outputStream.write((cmd + "\n").getBytes("ASCII"));

在什么地方键code的命令从何而来？我没有发现任何所谓的二进制文件在我的Andr​​oid的根文件系统？！？！

Where does the "keycode" command come from? I could not found any so called binary in my Android rootfs?!?!

推荐答案

Aleadam方法，不要在我的Andr​​oid 4.1.2的工作。我不知道为什么，但这种变通办法：

Aleadam method don't work on my android 4.1.2. I don't know why, but this workaround works:

public void dispachBackKey() {
    dispatchKeyEvent(new KeyEvent (KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK));
    dispatchKeyEvent(new KeyEvent (KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK));
}

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