UtilTools.java 文件源码

public static void putImageToShare(Context context, ImageView imageView) {
    BitmapDrawable bitmapDrawable = (BitmapDrawable) imageView.getDrawable();
    Bitmap bitmap = bitmapDrawable.getBitmap();
    //第一步：将Bitmap压缩成字节数组输出流
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 80, byteArrayOutputStream);
    //第二步：利用base64将字节数组输出流转换成String
    byte[] byteArray = byteArrayOutputStream.toByteArray();
    String imageString = new String(Base64.encode(byteArray, Base64.DEFAULT));
    //第三步：将String保存到ShareUtils
    ShareUtil.putString(context, StaticClass.IMAGE_TITLE, imageString);
}