Android6.0之后的权限检查及申请

以下这些权限在Android6. 0之后，都需要动态申请：

我们以申请WRITE_EXTERNAL_STORAGE权限为例
1、在AndroidManifest.xml中注册权限

<manifest> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
...
</manifest>

  

 

  
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2、检查应用程序是否已获得这个权限,若没有获得，则向系统申请此权限

 private static final  int PERMISSION_REQUEST_CODE = 1; private void checkMyAppPermission() { // android6.0 API 23后需要动态申请权限 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { int checkRs = checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE); if (checkRs == PackageManager.PERMISSION_DENIED) { // 没有权限要去申请 requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSION_REQUEST_CODE); } } }

  

 

  
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3、在回调中执行后动作

 // requestCode是requestPermissions(String[], int)传进来的int值 // permissions是申请的权限 // grantResults与permissions一一对应的申请结果，它的取值只能是PackageManager.PERMISSION_GRANTED或PackageManager.PERMISSION_DENIED @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); if (PERMISSION_REQUEST_CODE == requestCode) { for (int i = 0; i < permissions.length; i++) { if(Manifest.permission.WRITE_EXTERNAL_STORAGE.equals(permissions[i]) && PackageManager.PERMISSION_GRANTED == grantResults[i]) { Toast.makeText(MainActivity.this,"您已获得写SD卡的权限",Toast.LENGTH_LONG).show(); } } } }

  

 

  
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文章来源: blog.csdn.net，作者：WongKyunban，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/weixin_40763897/article/details/97404493