Question

我正在尝试请求ACCESS_FINE_LOCATION的权限并继续收到错误＆＃39;无法解析符号＆＃39; MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION＆＃39;，这是我的代码，有谁知道这是什么问题？

if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)){
                checkSelfPermission("Accept this to use location functionality");
            }
            else{
                ActivityCompat.requestPermissions(GpMap.this,
                        new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
                        MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
            }

Answer 1

您尚未在此Java类中的任何位置将MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION定义为int值。

Answer 2

我不完全确定你是怎么做到的，但这是一个例子：

这是请求

 @Override
public void onConnected(Bundle bundle) {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.ACCESS_FINE_LOCATION,
                    Manifest.permission.ACCESS_COARSE_LOCATION,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.READ_EXTERNAL_STORAGE
            }, PERMISSIONS_REQUEST_LOCATION);
        }
        return;
    }
}

这是响应的处理程序：

 @Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode){
        case PERMISSIONS_REQUEST_LOCATION:{
            if (grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                setLastLocation();
            }
            return;
        }
    }
}

无法解析MY_PERMISSIONS_REQUEST

2 个答案: