请求权限示例-优快云博客

本文链接：https://blog.youkuaiyun.com/duanjie924/article/details/80249946

本文介绍了一个简单的示例，展示了如何在Android应用中检查并请求必要的权限，如读写外部存储和使用摄像头。同时，提供了处理权限请求结果的方法。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

private void requestPermission() {  
    List<String> permissionsNeeded =  new ArrayList<>();  
    if (ContextCompat. checkSelfPermission ( this,  
            Manifest.permission. WRITE_EXTERNAL_STORAGE )== PackageManager. PERMISSION_DENIED ) {  
        permissionsNeeded.add(Manifest.permission. WRITE_EXTERNAL_STORAGE );  
    }  
    if (ContextCompat. checkSelfPermission ( this,  
            Manifest.permission. READ_EXTERNAL_STORAGE ) == PackageManager. PERMISSION_DENIED ) {  
        permissionsNeeded.add(Manifest.permission. READ_EXTERNAL_STORAGE );  
    }  
    if (ContextCompat. checkSelfPermission ( this, Manifest.permission. CAMERA ) ==  
            PackageManager. PERMISSION_DENIED ) {  
        permissionsNeeded.add(Manifest.permission. CAMERA );  
    }  
    if(permissionsNeeded.size()>0){  
        ActivityCompat.requestPermissions ( this, permissionsNeeded.toArray( new  
                String[permissionsNeeded.size()]), 1);  
    }  
}  
@Override  
public  void onRequestPermissionsResult(int requestCode, String permissions[],  int  
        []grantResults) {  
    switch (requestCode) {  
        case 1: {  
            boolean allowed =  true;  
            if(grantResults.length > 0 ){  
                for( int i=0;i<grantResults. length;i++){  
                    if (grantResults[i] == PackageManager. PERMISSION_GRANTED ) {  
                        Timber.e("case 1权限没有打开");  
                    } else {  
                        Timber.e("case 1权限没有");  
                        allowed =  false;  
                        break;  
                    }  
                }  
            }  
            if(!allowed){  
                //O TODO  自定义处理  
                //dialog();  
                Timber.e("case 1自定义处理");  
            }  
            break;  
        }  
    }  
}