在Android中找到包含View的窗口

Question

我找不到一种方法来获取Window包含任意Viewv 的引用.我找到了getWindowToken,但我无法弄清楚如何使用它？有谁知道怎么样？

此外,有谁知道为什么它返回IBinder而不是Window？

Answer 1

好吧......因为所有视图都有创建它们的活动的引用(Context),所以你可以使用它Context来获取窗口的引用.让我告诉你几分钟前我写的这个例子:

// main activity
import android.app.Activity;
import android.os.Bundle;
public class GetWindow extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        MyView view = new MyView(this);
        view.changeSomethingInWindow(); // keep an eye on this method
        setContentView(view);
    }
}

然后,在您的视图中,您可以执行以下操作:

// your view :D
import android.app.Activity;
import android.content.Context;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

public class MyView extends View{
    public MyView(Context context) {
        super(context);
    }

    public void changeSomethingInWindow(){
        // get a reference of the activity
        Activity parent = (Activity)getContext();
        // using the activity, get Window reference
        Window window = parent.getWindow();
        // using the reference of the window, do whatever you want :D
        window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    }
}

在这种情况下,我将Window显示的模式更改为Fullscreen.希望这对你有所帮助.如果你遇到麻烦,请告诉我.