ConvertToBitmapUtil.java

package com.cheng.utils.imagebitmap;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.view.View;
import android.widget.ScrollView;

/**
 * 转换为Bitmap的工具类
 */
public class ConvertToBitmapUtil {
    /**
     * 将View转换为Bitmap
     * @param view
     * @return
     */
    public static Bitmap convertViewToBitmap(View view) {
        view.destroyDrawingCache();
        view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
        view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
        view.setDrawingCacheEnabled(true);
        return view.getDrawingCache(true);
    }

    /**
     * 将ScrollView转换为Bitmap
     * @param scrollView
     * @return
     */
    public static Bitmap convertScrollViewToBitmap(ScrollView scrollView) {
        int h = 0;
        Bitmap bitmap = null;
        // 获取scrollview实际高度
        for (int i = 0; i < scrollView.getChildCount(); i++) {
            h += scrollView.getChildAt(i).getHeight();
            scrollView.getChildAt(i).setBackgroundColor(
                    Color.parseColor("#ffffff"));
        }
        // 创建对应大小的bitmap
        bitmap = Bitmap.createBitmap(scrollView.getWidth(), h,
                Bitmap.Config.RGB_565);
        final Canvas canvas = new Canvas(bitmap);
        scrollView.draw(canvas);
        return bitmap;
    }
}