1权限 和 动态申请

<!--文件读写权限-->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!--拍照权限-->
<uses-permission android:name="android.permission.CAMERA" />

2 app 属性添加

然后在 你的application 中加入 这个属性 :

android:requestLegacyExternalStorage="true"

3 mxl 设置

        <provider
                android:name="androidx.core.content.FileProvider"
                android:authorities="com.base.baselib.fileprovider"
                android:exported="false"
                android:grantUriPermissions="true">
            <meta-data
                    android:name="android.support.FILE_PROVIDER_PATHS"
                    android:resource="@xml/file_paths" />
        </provider>

在res 中添加 xml包和 file_paths.xml文件

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path
        name="external_files"
        path="." />
</paths>

4 代码配置

在你的 Application继承类中添加

    private void initFileXml() {
        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
        builder.detectFileUriExposure();
    }

5 代码实现

    /**
     * 打开相机
     */
    private void openPhotograph() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // 创建文件工具类 设置相机图片路径(用时间戳)
        mImagePath = FileUtils.getImageFilePath();
        //检查文件是否存在
        FileUtils.checkOrCreateDirectory(mImagePath);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(mImagePath)));
        mActivity.startActivityForResult(intent, Photograph_code);
    }

    /**
     * 打开相册
     */
    private void openAlbum() {
        //打开系统的相册
        if (mMaxSize == 0) {
            Intent intent = new Intent(Intent.ACTION_PICK, null);
            intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
            mActivity.startActivityForResult(intent, Album_code);
            return;
        }
        //打开自定义的相册
        AlbumActivity.gotoActivity(mActivity, AlbumList_code, mMaxSize);

    }

    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (mAlbumListener == null) return;
        if (resultCode != RESULT_OK) return;
        List<String> list = new ArrayList<>();
        if (requestCode == AlbumList_code && data != null) {
            //多选图片
            list = (List<String>) data.getSerializableExtra(ImageList);
        }

        if (requestCode == Album_code && data != null) {
            //单选图片 获图片的绝对地址
            mImagePath = FileUtils.getImageAbsolutePath(mActivity, data.getData());
            list.add(mImagePath);

        }
        if (requestCode == Photograph_code) {
            //拍照图片
            list.add(mImagePath);
        }
        mAlbumListener.onListener(list);
    }