获取权限信息失败

Question

public void showPkgPermission_Zengyang(Context context) {
String customPkg = "com.example.android.apis";
PackageManager pkgMag = context.getPackageManager();
try {
PackageInfo pkgInfo = pkgMag.getPackageInfo(customPkg, PackageManager.GET_PERMISSIONS);
Log.d("ANDROID_INFO", "permissions.lenght=" + pkgInfo.requestedPermissions.length);
int count = 1;
if (pkgInfo.requestedPermissions != null) {
for (String perStr : pkgInfo.requestedPermissions) {
Log.d("ANDROID_INFO", String.valueOf(count++) + ":" + perStr);
}
} else {
Log.d("ANDROID_INFO", "PERMISSION IS NULL");
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
}
问题出在哪明白了。pkgInfo.requestedPermissions
可为什么pkgInfo.permissions 会是NULL啊？？

Answer 1

google的api定义本身就异议很多，设计脑残的

Answer 2

 public void showPkgPermission_Zengyang(Context context) {
        String customPkg = "com.example.android.apis";
        PackageManager  pm= context.getPackageManager();  
        PackageInfo info;  
            try {  
                info = pm.getPackageInfo(customPkg, PackageManager.GET_PERMISSIONS);  
                String result = null;    
                String[] packagePermissions = info.requestedPermissions;    
                Log.i("name", info.packageName);    
                if (packagePermissions != null) {    
                    for (int j = 0; j < packagePermissions.length; j++) {    
                       Log.i(info.packageName,packagePermissions[j])  ;    
                    }    
    
                }else {    
                    Log.i("name", info.packageName + ": no permissions");    
                }    
            } catch (NameNotFoundException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }
    }
这么改应该可以了 我读自己的一个包读出来了

Answer 3

pkgMag.getPackageInfo的相关代码能贴下么？

Answer 4

这个是Android PackageInfo 自带的函数吧