Question

我需要在我的应用程序中获取视图的快照。我在RelativeLayout中有一些不同的东西，包括谷歌地图片段，3个带文字的进度条。进度条显示正常，但是当我将视图转换为位图时，谷歌地图是黑色的。我不想使用mMap.snapshot（），因为我将必须合并位图，并在我们在地图上绘制路线之后在其上添加绘图。有人有可行的解决方案吗？这是我正在使用的代码。

private Bitmap takeScreenshot() {
    Date now = new Date();
    RelativeLayout v = (RelativeLayout)findViewById(R.id.screenie_layout);
    android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
    Bitmap bitmap1 = null;


    try {
        v.clearFocus();
        v.setPressed(false);

        boolean willNotCache = v.willNotCacheDrawing();
        v.setWillNotCacheDrawing(false);

        // Reset the drawing cache background color to fully transparent
        // for the duration of this operation
        int color = v.getDrawingCacheBackgroundColor();
        v.setDrawingCacheBackgroundColor(0);

        if (color != 0) {
            v.destroyDrawingCache();
        }
        v.buildDrawingCache();
        Bitmap cacheBitmap = v.getDrawingCache();
        if (cacheBitmap == null) {
            Log.e(TAG, "failed getViewBitmap(" + v + ")", new RuntimeException());
        }

        bitmap1 = Bitmap.createBitmap(cacheBitmap);

        // Restore the view
        v.destroyDrawingCache();
        v.setWillNotCacheDrawing(willNotCache);
        v.setDrawingCacheBackgroundColor(color);


    } catch (Throwable e) {
        // Several error may come out with file handling or OOM
        e.printStackTrace();
    }

    return bitmap1;
}

Answer 1

我找到了一个非常简单的解决方案......

private Bitmap takeScreenshot() {
    Date now = new Date();
    RelativeLayout v = (RelativeLayout)findViewById(R.id.screenie_layout);
    android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
    Bitmap bitmap1 = null;


    try {
        v.clearFocus();
        v.setPressed(false);

        boolean willNotCache = v.willNotCacheDrawing();
        v.setWillNotCacheDrawing(false);


        v.buildDrawingCache();
        Bitmap cacheBitmap = v.getDrawingCache();
        if (cacheBitmap == null) {
            Log.e(TAG, "failed getViewBitmap(" + v + ")", new RuntimeException());
        }

        bitmap1 = Bitmap.createBitmap(cacheBitmap);

        // Restore the view
        v.destroyDrawingCache();
        v.setWillNotCacheDrawing(willNotCache);


    } catch (Throwable e) {
        // Several error may come out with file handling or OOM
        e.printStackTrace();
    }

    return overlay(bitmap1, mMapBitmap);


}

//此方法将地图和另一个位图组合在一起。

private Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
    Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig());
    Canvas canvas = new Canvas(bmOverlay);
    canvas.drawBitmap(bmp1, new Matrix(), null);
    canvas.drawBitmap(bmp2, 0, 0, null);
    return bmOverlay;
}

如何使用谷歌地图将视图转换为位图

1 个答案: