ionic1 权限问题

ionic 在Android8.0以上会出现相机打不开，下载apk打不开的情况，为了解决以上问题，具体方案如下
1 插件 cordova-plugin-android-permissions 1.0.0
安装插件 cordova pluign add cordova-plugin-android-permissions
2 相关的拍照权限

function checkPermissions() {
    const permissions = cordova.plugins.permissions,
    permissionList = [permissions.CAMERA,         
    permissions.WRITE_EXTERNAL_STORAGE,
    permissions.INSTALL_LOCATION_PROVIDER];
    function errorCallbacks() {
      console.warn("permissions is not turned on");
    }
    function checkPermissionCallbacks(status) {
      if(!status.hasPermission) {
        permissions.requestPermissions(
         permissionList,
          status => {
            if(!status.hasPermission) errorCallbacks();
          },
          errorCallbacks);
      }
    }
    permissions.hasPermission(permissionList, checkPermissionCallbacks, null);
  }
  checkPermissions()

3 相关apk下载权限

function userDate(url, targetPath){
   var permissions = cordova.plugins.permissions;
 permissions.hasPermission(permissions.READ_EXTERNAL_STORAGE,checkPermissionCallback, null);
   function checkPermissionCallback(status) {
           if (!status.hasPermission) {
                var errorCallback = function(){
                    console.log('Storagepermission is not turned on');
                }
                permissions.requestPermission(
                   permissions.READ_EXTERNAL_STORAGE,
                   function(status) {
                        if(!status.hasPermission) {
                            errorCallback();
                        } else {
                            // download_app();
                            download_app(url,targetPath)
                        }
                    },
                    errorCallback);
           }else{
              download_app(url, targetPath)
           }
       }
}

注：bug
a. 安装插件之后，对应的ionic1版本的话，安装之后会造成不能打包，需要在安装插件时 file插件对应版本号安装，添加Android平台时需要cordova platform add [email protected],
此时需要查看平台是否添加完整。
b. 为了解决权限问题，添加权限之后需要在AndroidMifeat
固定版本号

权限查看

c. 如果build时遇到transform…错 在Android平台下build.gradle
configurations.all {
resolutionStrategy {
force ‘com.android.support:support-v4:27.1.0’
}
}
def promptForReleaseKeyPassword()之前添加