在framework中如何去执行一个home key的键功能

Question

调用injectkeyevent,插入home键事件，键值为3

Answer 1

    startActivity的源码,看看有用没    @Override
    public void startActivity(Intent intent) {
        startActivityForResult(intent, -1);
    }
    public void startActivityForResult(Intent intent, int requestCode) {
        if (mParent == null) {
            Instrumentation.ActivityResult ar =
                mInstrumentation.execStartActivity(
                    this, mMainThread.getApplicationThread(), mToken, this,
                    intent, requestCode);
            if (ar != null) {
                mMainThread.sendActivityResult(
                    mToken, mEmbeddedID, requestCode, ar.getResultCode(),
                    ar.getResultData());
            }
            if (requestCode >= 0) {
                // If this start is requesting a result, we can avoid making
                // the activity visible until the result is received.  Setting
                // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
                // activity hidden during this time, to avoid flickering.
                // This can only be done when a result is requested because
                // that guarantees we will get information back when the
                // activity is finished, no matter what happens to it.
                mStartedActivity = true;
            }
        } else {
            mParent.startActivityFromChild(this, intent, requestCode);
        }
    }

Answer 2

关键你frawork中哪部分去执行，如果是一个service的话，获取context就好了，如果只是接口的话只能应用提供context了

Answer 3

解决方法:
http://hi.baidu.com/wishwingliao/blog/item/8364211fcdb462d9a78669de.html