Android 7.0以上调用相机崩溃

最新推荐文章于 2021-05-29 08:49:26 发布

恶魔蝎子

最新推荐文章于 2021-05-29 08:49:26 发布

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CC 4.0 BY-SA版权

分类专栏： Android

本文链接：https://blog.youkuaiyun.com/lidazhao2008/article/details/78427165

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针对Android 7.0及以上版本，该博客介绍了如何避免调用相机时应用崩溃的方法。通过创建临时文件并使用ContentValues设置MediaStore.Images.Media.DATA，将拍照结果保存到外部存储。同时提供了FileUtils类的相关代码，用于管理临时文件和缓存目录。

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android.os.FileUriExposedException: file:///storage/emulated/0/DCIM/IMG_1041503431.jpg exposed beyond app through ClipData.Itm.getUri()

  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                 /*获取当前系统的android版本号*/
                int currentapiVersion = android.os.Build.VERSION.SDK_INT;
                Log.e("currentapiVersion", "currentapiVersion====>" + currentapiVersion);
                //android 7.0以上拍照保存本地方法
                try {
                    mTmpFile = FileUtils.createTmpFile(webActivity.this);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                mTakePicPath = mTmpFile.getAbsolutePath();
                Log.e("mTakePicPath", "mTakePicPath====>" + mTakePicPath);
                ContentValues contentValues = new ContentValues(1);
                contentValues.put(MediaStore.Images.Media.DATA, mTmpFile.getAbsolutePath());
                Uri uri = webActivity.this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
                startActivityForResult(intent, UserConfig.PAY_CAMERA);
//                }
            } else {
                if (mTakePicPath == null) {
                    mTakePicPath = DIR_ICR + "card3.jpg";
                }
                File dstFile = new File(mTakePicPath);
                Uri uri = Uri.fromFile(dstFile);
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
                startActivityForResult(intent, UserConfig.PAY_CAMERA);
            }


        }

需要使用createTmpFile保存为临时文件然后拍照。

/**
 * 文件工具
 *
 * @author jiangyufeng
 * @version [版本号, 2015年11月23日]
 * @see [相关类/方法]
 * @since [产品/模块版本]
 */
public class FileUtils {
    private static final String JPEG_FILE_PREFIX = "IMG";
    private static final String JPEG_FILE_SUFFIX = ".jpg";

    public static File createTmpFile(Context context) throws IOException{
        File dir = null;
        if(TextUtils.equals(Environment.getExternalStorageState(), Environment.DIRECTORY_ALARMS)) {
            dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_ALARMS);
            if (!dir.exists()) {
                dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_ALARMS + "/Come/");
                if (!dir.exists()) {
                    dir = getCacheDirectory(context, true);
                }
            }
        }else{
            dir = getCacheDirectory(context, true);
        }
        return File.createTempFile(JPEG_FILE_PREFIX, JPEG_FILE_SUFFIX, dir);
    }


    private static final String EXTERNAL_STORAGE_PERMISSION = "android.permission.WRITE_EXTERNAL_STORAGE";


    public static File getCacheDirectory(Context context) {
        return getCacheDirectory(context, true);
    }


    public static File getCacheDirectory(Context context, boolean preferExternal) {
        File appCacheDir = null;
        String externalStorageState;
        try {
            externalStorageState = Environment.getExternalStorageState();
        } catch (NullPointerException e) { // (sh)it happens (Issue #660)
            externalStorageState = "";
        } catch (IncompatibleClassChangeError e) { // (sh)it happens too (Issue #989)
            externalStorageState = "";
        }
        if (preferExternal && MEDIA_MOUNTED.equals(externalStorageState) && hasExternalStoragePermission(context)) {
            appCacheDir = getExternalCacheDir(context);
        }
        if (appCacheDir == null) {
            appCacheDir = context.getCacheDir();
        }
        if (appCacheDir == null) {
            String cacheDirPath = "/data/data/" + context.getPackageName() + "/cache/";
            appCacheDir = new File(cacheDirPath);
        }
        return appCacheDir;
    }


    public static File getIndividualCacheDirectory(Context context, String cacheDir) {
        File appCacheDir = getCacheDirectory(context);
        File individualCacheDir = new File(appCacheDir, cacheDir);
        if (!individualCacheDir.exists()) {
            if (!individualCacheDir.mkdir()) {
                individualCacheDir = appCacheDir;
            }
        }
        return individualCacheDir;
    }

    private static File getExternalCacheDir(Context context) {
        File dataDir = new File(new File(Environment.getExternalStorageDirectory(), "Android"), "data");
        File appCacheDir = new File(new File(dataDir, context.getPackageName()), "cache");
        if (!appCacheDir.exists()) {
            if (!appCacheDir.mkdirs()) {
                return null;
            }
            try {
                new File(appCacheDir, ".nomedia").createNewFile();
            } catch (IOException e) {
            }
        }
        return appCacheDir;
    }

    private static boolean hasExternalStoragePermission(Context context) {
        int perm = context.checkCallingOrSelfPermission(EXTERNAL_STORAGE_PERMISSION);
        return perm == PackageManager.PERMISSION_GRANTED;
    }

}