android6,0申请权限 _Android

莫问天涯路几重，轻衫侧帽且从容。这篇文章主要讲述android6,0申请权限相关的知识，希望能为你提供帮助。

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android6.0开启权限遇到的一些坑一个小白，记录学习遇到的一些坑
最近在做android方面的实验，做到用LocationManager进行定位，发现单独在AndroidManifest.xml文件中
声明开启权限，不能够真正的开启想要的权限，说是安全问题，其实在日常中我们都很清楚的一个权限开启方式。

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遇到问题，第一个想到的就是上网搜索，但是能解决问题的答案少的可怜，所以就记录下来，防止下次在遇到，不知所措。
废话不多说，其实很简单。在你报错的地方加上一个判断语句，判断当前的sdk版本是否大于23，大于就申请开启权限；否则直接跳过去执行你的代码

if (Build.VERSION.SDK_INT > = Build.VERSION_CODES.M) { if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PERMISSION_GRANTED & & checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this,new String[]{ Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION },2); return; } }

下面是我要执行的代码，这段代码就是要申请开启权限的核心

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locationListener);

原函数是

public static void requestPermissions(final @NonNull Activity activity, final @NonNull String[] permissions, final @IntRange(from = 0) int requestCode) {

参数：

activity: 顾名思义，就是要申请权限的那个activity。
permissions：要申请的权限名称，比如我申请的有

Manifest.permission.ACCESS_FINE_LOCATION,卫星定位要用到 Manifest.permission.ACCESS_COARSE_LOCATION.基站定位要用到
requestCode：随便填个数，目前我了解这个参数在重写onRequestPermissionsResult这个方法用的到，重写这个方法可以了解到权限有没有开启成功。
可以通过重写该函数去显示权限开启成功还是失败

@Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { if (requestCode == 2) { for (int i = 0; i < permissions.length; i++) { if (grantResults[i] == PERMISSION_GRANTED) { Toast.makeText(this, "" + "权限" + permissions[i] + "申请成功", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(this, "" + "权限" + permissions[i] + "申请失败", Toast.LENGTH_SHORT).show(); } } } }

下面我贴出我本次做的一个实验

布局文件

< ?xml version="1.0" encoding="utf-8"?> < LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> < TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/t1"/> < TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/t2"/> < /LinearLayout>

java代码

package com.example.locationmanage; import android.Manifest; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Build; import android.os.Bundle; import android.widget.TextView; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import java.text.SimpleDateFormat; import java.util.Date; import static android.content.pm.PackageManager.PERMISSION_GRANTED; public class MainActivity extends AppCompatActivity { TextView info; TextView location; LocationManager locationManager; LocationListener locationListener; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); info = findViewById(R.id.t1); location = findViewById(R.id.t2); //locationManger初始化 locationListener_init(); locationManager_init(); }void locationManager_init() { locationManager = (LocationManager) this.getSystemService(LOCATION_SERVICE); locationListener_init(); if (Build.VERSION.SDK_INT > = Build.VERSION_CODES.M) { if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PERMISSION_GRANTED & & checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PERMISSION_GRANTED) { // TODO: Consider calling //Activity#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 Activity#requestPermissions for more details. ActivityCompat.requestPermissions(this,new String[]{ Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION },2); return; } } locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locationListener); }@Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { if (requestCode == 2) { for (int i = 0; i < permissions.length; i++) { if (grantResults[i] == PERMISSION_GRANTED) { Toast.makeText(this, "" + "权限" + permissions[i] + "申请成功", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(this, "" + "权限" + permissions[i] + "申请失败", Toast.LENGTH_SHORT).show(); } } } }void locationListener_init() { locationListener = new LocationListener() { @Override public void onLocationChanged(Location location) { SimpleDateFormat dateFormat = (SimpleDateFormat) SimpleDateFormat.getTimeInstance(2); String str = dateFormat.format(new Date(location.getTime())); info.setText("时间：" + str + "\\n"); info.append("经度：" + location.getLongitude() + "\\n"); info.append("纬度：" + location.getLatitude() + "\\n"); info.append("海拔：" + location.getAltitude() + "\\n"); }@Override public void onStatusChanged(String provider, int status, Bundle extras) { if (status == LocationProvider.AVAILABLE) info.setText("当前的gps可见的\\n"); else if (status == LocationProvider.OUT_OF_SERVICE) info.setText("当前的gps服务区外\\n"); else if (status == LocationProvider.TEMPORARILY_UNAVAILABLE) info.setText("当前的gps被暂停\\n"); }@Override public void onProviderEnabled(String provider) { info.setText("当前的gps被启动\\n"); }//被警用时触发 @Override public void onProviderDisabled(String provider) { info.setText("当前的gps被禁用\\n"); } }; } }

应用清单文件AndroidManifest

< ?xml version="1.0" encoding="utf-8"?> < manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.locationmanage"> < uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> < uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> < application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> < activity android:name=".MainActivity"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < /activity> < /application> < /manifest>

【android6,0申请权限】继续努力！~