MpPreview/app/src/main/java/com/xypower/mppreview/PhotoUtil.java

package com.xypower.mppreview;


import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.MediaStore;

import androidx.activity.result.ActivityResultLauncher;
import androidx.core.content.FileProvider;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

public class PhotoUtil {
    /**
     * 保存 photoUri
     */
    private static Uri photoUri;

    /**
     * 打开相机
     */
    public static void openCamera(Context context, ActivityResultLauncher<Intent> photoResultLauncher) {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        //确保有相机来处理Intent
        if (takePictureIntent.resolveActivity(context.getPackageManager()) != null) {
            File photoFile = saveFileName(context);
            if (photoFile != null) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                    //适配Android 7.0文件权限，通过FileProvider创建一个content类型的Uri
                    photoUri = FileProvider.getUriForFile(context.getApplicationContext(), "com.stg.rouge.activity.fileprovider", photoFile);
                } else {
                    photoUri = getDestinationUri(context);
                }
                takePictureIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
                photoResultLauncher.launch(takePictureIntent);
            }
        }
    }

    /**
     * 获取 Uri
     *
     * @return
     */
    private static Uri getDestinationUri(Context context) {
        String fileName = String.format("winetalk_%s.jpg", System.currentTimeMillis());
        File cropFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES), fileName);
        return Uri.fromFile(cropFile);
    }

    //当前路径，拍照回调后需要使用
    private String currentPath = null;

    /**
     * 保存照片路径
     *
     * @return
     */
    private static File saveFileName(Context context) {
        File newFolder = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
        SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
        Date date = new Date(System.currentTimeMillis());
        String name = format.format(date) + ".jpg";

        File ji = null;
        try {
            ji = new File(newFolder + "/" + name);
            ji.createNewFile();
//            currentPath = ji.getAbsolutePath();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ji;
    }


}