Question

我有一个问题如何将我的App中的位图保存到Button中的android库中？我只是希望我的位图放在图库中，用户可以使用它将其设置为可能是他的背景。那怎么回事？

Answer 1

您可以修改以下功能以满足您的需求

 private void takeSnapShot(Bitmap bitmap) {
    OutputStream outStream = null;
    String state = Environment.getExternalStorageState();
    String appName = mContext.getString(R.string.app_name);

    if (state.equals(Environment.MEDIA_MOUNTED)) {
        String sdroot = Environment.getExternalStorageDirectory().getAbsolutePath();
        String path = sdroot + "/" + appName;
        File dir = new File(path);
        if (!dir.exists() && !dir.mkdirs()) {
            return;
        }

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.US);
        String dstr = sdf.format(new Date());
        String filename = path + "/" + dstr + ".jpg";

        try {
            outStream = new FileOutputStream(filename);
        } catch (FileNotFoundException e) {
            LogUtils.println("Exception while writing image");
            e.printStackTrace();
        }

        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);

        try {
            if (outStream != null)
                outStream.close();
            mMediaScanner.scanMediaByName(filename, R.string.snapshot_save);
        } catch (IOException e) {
            e.printStackTrace();
        }


    } else {
        //  Add some parameters to the image that will be stored in the Image ContentProvider
        int UNIQUE_BUCKET_ID = 111;
        String disp = "anything";

        ContentValues values = new ContentValues(7);
        values.put(MediaStore.Images.Media.DISPLAY_NAME, disp);
        values.put(MediaStore.Images.Media.TITLE, disp);
        values.put(MediaStore.Images.Media.DESCRIPTION, appName + disp);
        values.put(MediaStore.Images.Media.BUCKET_DISPLAY_NAME, appName + " snapshot");
        values.put(MediaStore.Images.Media.BUCKET_ID, UNIQUE_BUCKET_ID);
        values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
        values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
        // Inserting the image meta data inside the content provider
        Uri uri = mContext.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

        try {
            if (uri != null) {
                outStream = mContext.getContentResolver().openOutputStream(uri);
                if (outStream != null) {
                    outStream.close();
                }
            }
        } catch (FileNotFoundException e) {
            LogUtils.println("Exception while writing image");
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Answer 2

您可以像这样在图库中保存图片。

MediaStore.Images.Media.insertImage（getContentResolver（），yourBitmap，yourTitle，yourDescription）;

试试这个

图像显示在图库中，存储在媒体商店提供商

上

public static void addImageToGallery（final String filePath，final Context context）{

ContentValues values = new ContentValues();

values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis());
values.put(Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.MediaColumns.DATA, filePath);

context.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values);

}

将图像保存在图库中

2 个答案: