Android M权限：checkSelfPermission()始终返回-1

概述在我的应用程序中,我有一个需要几个权限的后台服务.由于MOS要求开发人员确保这些权限已在运行时获得批准,因此我尝试使用以下代码检查权限.getApplicationContext().checkSelfPermission()对于允许/拒绝,我没有表现出任何恶意.相反,我在“应用程序信息”页面中允许了这些权限

在我的应用程序中,我有一个需要几个权限的后台服务.
由于M OS要求开发人员确保这些权限已在运行时获得批准,因此我尝试使用以下代码检查权限.

getApplicationContext().checkSelfPermission()

对于允许/拒绝,我没有表现出任何恶意.相反,我在“应用程序信息”页面中允许了这些权限(在设置>应用程序>应用程序管理器>我的后台服务中)
但是,尽管我已在“应用程序信息”页面中启用了这些权限,
上面的函数总是返回-1.

如果在应用程序信息页面上更改了权限批准,如何正确检查权限？

解决方法:

 public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;public boolean checkLocationPermission() {    if (ContextCompat.checkSelfPermission(this,            Manifest.permission.ACCESS_FINE_LOCATION)            != PackageManager.PERMISSION_GRANTED) {        // Should we show an explanation?        if (ActivityCompat.shouldShowRequestPermissionRationale(this,                Manifest.permission.ACCESS_FINE_LOCATION)) {            // Show an expanation to the user *asynchronously* -- don't block            // this thread waiting for the user's response! After the user            // sees the explanation, try again to request the permission.            //Prompt the user once explanation has been shown            ActivityCompat.requestPermissions(this,                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION},                    MY_PERMISSIONS_REQUEST_LOCATION);        } else {            // No explanation needed, we can request the permission.            ActivityCompat.requestPermissions(this,                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION},                    MY_PERMISSIONS_REQUEST_LOCATION);        }        return false;    } else {        return true;    }}@OverrIDepublic voID onRequestPermissionsResult(int requestCode,                                       String permissions[], int[] grantResults) {    switch (requestCode) {        case MY_PERMISSIONS_REQUEST_LOCATION: {            // If request is cancelled, the result arrays are empty.            if (grantResults.length > 0                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                // permission was granted, yay! Do the                // contacts-related task you need to do.                buildGoogleapiclient();                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {                    // Todo: ConsIDer calling                    //    ActivityCompat#requestPermissions                    // here to request the missing permissions, and then overrIDing                    //   public voID onRequestPermissionsResult(int requestCode, String[] permissions,                    //                                          int[] grantResults)                    // to handle the case where the user grants the permission. See the documentation                    // for ActivityCompat#requestPermissions for more details.                    return;                }                mGoogleMap.setMyLocationEnabled(true);            } else {                // permission denIEd, boo! disable the                // functionality that depends on this permission.                Toast.makeText(this, "permission denIEd", Toast.LENGTH_LONG).show();            }            return;        }        // other 'case' lines to check for other        // permissions this app might request    }}

你应该做这样的事情.

总结

以上是内存溢出为你收集整理的Android M权限：checkSelfPermission()始终返回-1全部内容，希望文章能够帮你解决Android M权限：checkSelfPermission()始终返回-1所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。