createBitmap --- java.lang.IllegalArgumentException：如果x必须＆LT; bitmap.width（） [英] createBitmap --- java.lang.IllegalArgumentException: x must be < bitmap.width()

问题描述

我收到错误而采取的截图并创建位图裁剪图片

I am getting error while taking screenshot and create bitmap with cropping picture

下面是我的code

    View v1 = mKittyBGLayer.getRootView();
    v1.setDrawingCacheEnabled(true);
    Bitmap source = v1.getDrawingCache();
    int width = source.getWidth();
    int height = source.getHeight();
    System.out.println("vListView : -"+vListView.getWidth());
    System.out.println("hListView : -"+hListView.getHeight());
    System.out.println("Width : -"+width);
    System.out.println("Height : -"+height);
    bitmap = Bitmap.createBitmap(source, vListView.getWidth(), 0, width, height - hListView.getHeight());

我logcat的是

my logcat is

        11-01 11:00:31.419: I/System.out(1658): vListView :- 60
        11-01 11:00:31.429: I/System.out(1658): hListView :- 60
        11-01 11:00:31.429: I/System.out(1658): Width :- 480
        11-01 11:00:31.429: I/System.out(1658): Height :- 320
        11-01 11:00:31.429: D/AndroidRuntime(1658): Shutting down VM
        11-01 11:00:31.429: W/dalvikvm(1658): threadid=1: thread exiting with uncaught exception  (group=0x40018560)
        11-01 11:00:31.429: E/AndroidRuntime(1658): FATAL EXCEPTION: main
        11-01 11:00:31.429: E/AndroidRuntime(1658): java.lang.IllegalArgumentException: x + width  must be <= bitmap.width()
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.graphics.Bitmap.createBitmap(Bitmap.java:410)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.graphics.Bitmap.createBitmap(Bitmap.java:383)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at com.appsehs.android.CUTECRAZYKITTENDRESSUPGAME.PhotoSortrActivity.takeScreenShot(PhotoSortrActivity.java:247)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at com.appsehs.android.CUTECRAZYKITTENDRESSUPGAME.PhotoSortrActivity.onOptionsItemSelected(PhotoSortrActivity.java:274)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.app.Activity.onMenuItemSelected(Activity.java:2205)

在这里你可以看到是x＆LT; bitmap.getWidth平均60℃; 480

Here you can see that x < bitmap.getWidth mean 60 < 480

虽然我收到错误

推荐答案

没有，不是 x必须＆LT; bitmap.width（）。它说 X +宽度必须与LT; = bitmap.width（）

您正在创建一个位图像这样：

You are creating a Bitmap like so:

Bitmap.createBitmap(source, 60, 0, 480, 260); // 320 - 60 = 260

基本上，你是从绘图X = 60，Y = 0 到 X = 480 + 60，Y = 260 在位图这是只有小480x320。很显然，这是不可能的，因为你的 X 坐标离开位图。

Basically, you are drawing from x = 60, y = 0 to x = 480 + 60, y = 260 on a Bitmap which is only 480x320. Obviously, this is not possible, since your x coordinate is off the Bitmap.

这是很难告诉你如何解决这个问题不知道您的具体使用案例。基本上，你的源图像必须适合在 {X1：X，X2：X +宽度，Y1：Y，Y2：Y +高} 。

It's hard to tell you how to fix this without knowing your exact use case. Basically, your source image has to fit within { x1: x, x2: x + width, y1: y, y2: y + height }.

如果您只想从60像素向前画，那你需要这样做：

If you only want to draw from the 60th pixel onward, then you need to do this:

Bitmap.createBitmap(source, vListView.getWidth(), 0, width - vListView.getWidth(), height - hListView.getHeight());

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