Android 获取没有标题/通知栏的窗口大小
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Getting the size of the window WITHOUT title/notification bars
提问by Victor
I've been playing around with Android development and one of the things I'd like to be able to do is dynamically create a background image for my windows, similar to the one below.
我一直在玩 Android 开发，我希望能够做的一件事是为我的窗口动态创建背景图像，类似于下面的图像。
This is from my BlackBerry app. It consists of three separate parts, the bottom right logo, the top left watermark, and the bottom right name. It works independent of screen size because the BlackBerry app just gets all three parts and generates an appropriately sized bitmap using the screen width and height.
这是来自我的黑莓应用程序。它由三个独立的部分组成，右下角的标志、左上角的水印和右下角的名称。它的工作与屏幕大小无关，因为 BlackBerry 应用程序只获取所有三个部分，并使用屏幕宽度和高度生成适当大小的位图。
Since Android has quite a bit more screen resolution possibilities I need to be able to generate backgrounds on the fly like this. However, I have not found any way to get the height/width of the window in Android. I can get the screen resolution, but that includes the application title bar and the notification bar, which is unacceptable.
由于 Android 有更多的屏幕分辨率可能性，我需要能够像这样即时生成背景。但是，我还没有找到任何方法来获取 Android 中窗口的高度/宽度。我可以获得屏幕分辨率，但这包括应用程序标题栏和通知栏，这是不可接受的。
I'd like to know how to get the size of my window, or screen resolution minus the title and notification bars. I think this might be possible using the dimensions of my layout managers but I cannot get the height/width of them in the onCreate method so I'm not sure what to do exactly.
我想知道如何获得我的窗口大小或屏幕分辨率减去标题和通知栏。我认为这可能使用我的布局管理器的尺寸，但我无法在 onCreate 方法中获得它们的高度/宽度，所以我不确定该怎么做。
Thanks.
谢谢。
采纳答案by Evgeny
Use View.MeasureSpec.getSizemethod in onMeasureoverride.
在onMeasure覆盖中使用View.MeasureSpec.getSize方法。
@Override
protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec)
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
...
}
回答by Evgeni Shafran
I have a tutorial on my blog that give you the ability to save your screen size on launch, You can read it here: http://evgeni-shafran.blogspot.com/2011/01/android-screen-size-problem.html
我的博客上有一个教程，可以让您在启动时保存屏幕尺寸，您可以在这里阅读：http: //evgeni-shafran.blogspot.com/2011/01/android-screen-size-problem。 html
Basicly you need to overide an onMeasure method of the first layout that hold you full screen, and get the width and height from there
基本上你需要覆盖第一个布局的 onMeasure 方法，让你全屏，并从那里获取宽度和高度
回答by Sephy
have a look at getwidth() and getheight() maybe? that should give you the size of the screen. though, I don't know If it takes the bars or not. But I don't think so...
看看 getwidth() 和 getheight() 可能吗？这应该给你屏幕的大小。不过，我不知道是否需要酒吧。但我不这么认为...
回答by SteelBytes
in the first onDraw, call getWidth, getHeight. these will not be valid before then.
在第一个 onDraw 中，调用 getWidth、getHeight。在此之前这些将无效。
if you are not using a custom view/layout then you can instead call getWidth/getHeight during the first onWindowFocusChanged
如果您没有使用自定义视图/布局，那么您可以在第一次 onWindowFocusChanged 期间调用 getWidth/getHeight
回答by rat
To accomplish this in my app, I had to find a View's dimensions within the main Activity. It looked something like this:
为了在我的应用程序中实现这一点，我必须在主活动中找到一个视图的维度。它看起来像这样：
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
gestureScanner = new GestureDetector(this); //Object for handling gestures.
mvView = new MyView(this); //MyView is class that extends View.
setContentView(myView);
}
@Override
public void onShowPress(MotionEvent e) {
//Returns the size of the entire window, including status bar and title.
DisplayMetrics dm = new DisplayMetrics();
this.getWindowManager().getDefaultDisplay().getMetrics(dm);
//Try to find the dimension of the view without the status/title bars.
int iViewHeight = mvMountain.getHeight();
int iViewWidth = mvMountain.getWidth();
Toast toast = Toast.makeText(this," View:" + iViewWidth + ","+iViewHeight + " Window: " + dm.widthPixels + " by " + dm.heightPixels, 2);
toast.show();
}
