关于使用LocationManager时遇到的问题

在使用下面这行代码的时候，android studio提示Call requires permission which may be rejected by user 

Location location = locationManager.getLastKnownLocation(locationProvider);

我在网上了解了一下，这个问题是因为在api23以后，需要一个提示。

我的解决方案

Compile Sdk Version：6.0

Build Tools Version：23.0.1

build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion '23.0.1'
    defaultConfig {
        applicationId "com.example.baidumaptest"
        minSdkVersion 21
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        useLibrary 'org.apache.http.legacy'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile files('libs/baidumapapi_base_v4_1_1.jar')
    compile files('libs/baidumapapi_cloud_v4_1_1.jar')
    compile files('libs/baidumapapi_map_v4_1_1.jar')
    compile files('libs/baidumapapi_radar_v4_1_1.jar')
    compile files('libs/baidumapapi_search_v4_1_1.jar')
    compile files('libs/baidumapapi_util_v4_1_1.jar')
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:+'
    testCompile 'junit:junit:4.12'
}

红色部分即是需要修改的部分。

最后重启as问题就解决了。