将位图图像保存到画廊 android 10 的特定位置 [英] Save bitmap image to specific location of gallery android 10

问题描述

我正在使用此代码:

MediaStore.Images.Media.insertImage(getContentResolver(), bitmap, "title", "description");

而且运行良好.

问题:

1. 它会自动在图库中创建一个名为图片"的文件夹.但我想要不同的名称，例如我的应用名称.
2. MediaStore 的insertImage() 函数在Android 10 中折旧:

<块引用>

public static String insertImage (ContentResolver cr,字符串图像路径，字符串名称，字符串描述)

<块引用>

此方法已在 API 级别 29 中弃用.插入图像应使用 MediaColumns#IS_PENDING 执行，它提供了对生命周期的更丰富的控制.

我已经阅读了文档，但实际上并不了解 IS_PENDING 以及如何使用它.

解决方案

试试这个

private void saveImage(Bitmap bitmap, @NonNull String name) throws IOException {布尔值保存；输出流 fos;如果 (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {ContentResolver 解析器 = mContext.getContentResolver();ContentValues contentValues = new ContentValues();contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, name);contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "image/png");contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, "DCIM/" + IMAGES_FOLDER_NAME);Uri imageUri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);fos = resolver.openOutputStream(imageUri);} 别的 {String imagesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString() + File.separator + IMAGES_FOLDER_NAME;File file = new File(imagesDir);如果 (!file.exists()) {文件.mkdir();}File image = new File(imagesDir, name + ".png");fos = 新文件输出流(图像)}保存 = bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);fos.flush();fos.close();}

I am using this code:

MediaStore.Images.Media.insertImage(getContentResolver(), bitmap, "title" , "description");

and it is working well.

Problems:

1. It is creating a folder called "Pictures" in gallery automatically. But I want different name, for example my app's name.
2. insertImage() function of MediaStore is depreciated in android 10:

public static String insertImage (ContentResolver cr, String imagePath, String name, String description)

This method was deprecated in API level 29. inserting of images should be performed using MediaColumns#IS_PENDING, which offers richer control over lifecycle.

I have read the documentation and don't actually understand IS_PENDING and how to use it.

解决方案

Try this

private void saveImage(Bitmap bitmap, @NonNull String name) throws IOException {
    boolean saved;
    OutputStream fos;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        ContentResolver resolver = mContext.getContentResolver();
        ContentValues contentValues = new ContentValues();
        contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, name);
        contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "image/png");
        contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, "DCIM/" + IMAGES_FOLDER_NAME);
        Uri imageUri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
        fos = resolver.openOutputStream(imageUri);
    } else {
        String imagesDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_DCIM).toString() + File.separator + IMAGES_FOLDER_NAME;

        File file = new File(imagesDir);

        if (!file.exists()) {
            file.mkdir();
        }

        File image = new File(imagesDir, name + ".png");
        fos = new FileOutputStream(image)

    }

    saved = bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
    fos.flush();
    fos.close();
}

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