安卓相机：获取最近拍摄的照片缩略图做相册按钮图标

海天鹰2026-04-28 14:48

java 复制代码

String[] projection = { MediaStore.Images.Media._ID, MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, MediaStore.Images.Media.DATE_TAKEN + " DESC");
if (cursor != null && cursor.moveToFirst()) {
    String path_camera = Environment.getExternalStorageDirectory().toString() + "/DCIM/Camera/";
    while (true) {
        int index_id = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
        int index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        long id = cursor.getLong(index_id);
        String path = cursor.getString(index_data);
        if (path.startsWith(path_camera)) {
            Bitmap bitmap = MediaStore.Images.Thumbnails.getThumbnail(getContentResolver(), id, MediaStore.Images.Thumbnails.MINI_KIND, null);
            imageButton_album.setImageBitmap(bitmap);
            break;
        } else
            cursor.moveToNext();
    }
    cursor.close();
}

拍完照要写入媒体数据库

复制代码

https://blog.51cto.com/vaero/779942

java 复制代码

ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, filename);
values.put(MediaStore.Images.Media.DISPLAY_NAME, filename);
values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.Images.Media.DATA, filepath);
getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
MediaScannerConnection.scanFile(MainActivity.this, new String[] { filepath }, null, null);

但是，只能获取系统相机拍摄的照片，自己拍的照片取不到，数据库插入失败？