如何使用 imageview onclick 保存位图图像 [英] How to save a bitmap image with imageview onclick

问题描述

我正在开发 android 中的图像着色.因此，当我单击另一个图像视图(如保存)时，将颜色应用于我的图像后，我必须将该图像保存到图库.

Am developing a coloring of images in android. So after applying colors to my image when i click another imageview like save, then i have to save that image to gallery.

推荐答案

从imageView获取位图:

imageview.buildDrawingCache();
Bitmap bm=imageview.getDrawingCache();

要将其保存在文件中:

OutputStream fOut = null;
Uri outputFileUri;
try {
    File root = new File(Environment.getExternalStorageDirectory()
        + File.separator + "folder_name" + File.separator);
    root.mkdirs();
    File sdImageMainDirectory = new File(root, "myPicName.jpg");
    outputFileUri = Uri.fromFile(sdImageMainDirectory);
    fOut = new FileOutputStream(sdImageMainDirectory);
} catch (Exception e) {
    Toast.makeText(this, "Error occured. Please try again later.",
    Toast.LENGTH_SHORT).show();
}
try {
    bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
    fOut.flush();
    fOut.close();
} catch (Exception e) {
}

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