android targetSdkVersion 改成28以后出的问题

1 找不到网络
在res/xml 新建立
network_security_config.xml文件
内容

<?xml version ="1.0" encoding ="utf-8"?>

在androidManifest.xml application 添加
android:networkSecurityConfig="@xml/network_security_config"

在application下边添加

========================================================
问题

Failed resolution of: Lorg/apache/http/ProtocolVersion;

解决
在application下边添加

=======================

3 添加拍照
在res/xml/ 建立provider_paths.xml

<?xml version="1.0" encoding="utf-8"?>

在manifests application 添加

打开相机

   public static void getByCamera(Activity act, String path, int requestCode) {        String state = Environment.getExternalStorageState();        if (state.equals(Environment.MEDIA_MOUNTED)) {            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);            Uri uri = getUri(act, new File(path));            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);            takePictureIntent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);            //Android7.0添加临时权限标记，此步千万别忘了            takePictureIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);            act.startActivityForResult(takePictureIntent, requestCode);        }      }public static Uri getUri(Context context, File file) {        Uri fileUri;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {            fileUri =  FileProvider.getUriForFile(context.getApplicationContext(),  "包名.fileprovider",file);        } else {            fileUri = Uri.fromFile(file);        }        return fileUri;    }

注意：fileprovider 这个名字是固定的如果manifests，getUri 不一致会报错的。

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