获取View的缓存，设置到新的ImageView 固定View

• 获取View的缓存，设置到新的ImageView 固定View的位置

public void init() {
        View view = mApplication.getView();
        Bitmap bitmap = getViewImageCache(view);

        if (bitmap != null) {
            imgView.setImageBitmap(bitmap);
        }
        //获取状态栏高度
        int barh=DensityUtil.getStatusBarH(this);

        //获取view的位置
        int[] location = new int[2];
        view.getLocationOnScreen(location);
        int left = location[0];
        int top = location[1];//整个屏幕高度
        LinearLayout.MarginLayoutParams marginLayoutParams = new ViewGroup.MarginLayoutParams(imgView.getLayoutParams());
        marginLayoutParams.topMargin = top-barh;//整个屏幕高度-状态栏高度
        marginLayoutParams.leftMargin = left;
        marginLayoutParams.width = view.getWidth();
        marginLayoutParams.height = view.getHeight();
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(marginLayoutParams);
        imgView.setLayoutParams(layoutParams);



    }
    //获取View缓存
    private Bitmap getViewImageCache(View view) {
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bitmap = view.getDrawingCache();
        if (bitmap == null) {
            return null;
        }
        bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight());
        view.destroyDrawingCache();
        return bitmap;
    }

获取状态栏高度 方法

 public static int getStatusBarH(Context context) {
        Class<?> c;
        Object obj;
        Field field;
        int statusBarHeight = 0;
        try {
            c = Class.forName("com.android.internal.R$dimen");
            obj = c.newInstance();
            field = c.getField("status_bar_height");
            int x = Integer.parseInt(field.get(obj).toString());
            statusBarHeight = context.getResources().getDimensionPixelSize(x);
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        return statusBarHeight;
    }