Android权限判断checkPermission

判断本程序是否拥有某权限的方法：

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1. private static final String EXTERNAL_STORAGE_PERMISSION = "android.permission.WRITE_EXTERNAL_STORAGE";  
2.   
3. private static boolean hasExternalStoragePermission(Context context) {  
4.         int perm = context.checkCallingOrSelfPermission(EXTERNAL_STORAGE_PERMISSION);  
5.         return perm == PackageManager.PERMISSION_GRANTED;  
6.     }  

private static final String EXTERNAL_STORAGE_PERMISSION = "android.permission.WRITE_EXTERNAL_STORAGE";

private static boolean hasExternalStoragePermission(Context context) {
		int perm = context.checkCallingOrSelfPermission(EXTERNAL_STORAGE_PERMISSION);
		return perm == PackageManager.PERMISSION_GRANTED;
	}

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1. private static boolean checkPermission(Context context, String permName, String pkgName){  
2.         PackageManager pm = context.getPackageManager();  
3.         if(PackageManager.PERMISSION_GRANTED == pm.checkPermission(permName, pkgName)){  
4.             System.out.println(pkgName + "has permission : " + permName);  
5.             return true;  
6.         }else{  
7.             //PackageManager.PERMISSION_DENIED == pm.checkPermission(permName, pkgName)  
8.             System.out.println(pkgName + "not has permission : " + permName);  
9.             return false;  
10.         }  
11.     }  

private static boolean checkPermission(Context context, String permName, String pkgName){
		PackageManager pm = context.getPackageManager();
		if(PackageManager.PERMISSION_GRANTED == pm.checkPermission(permName, pkgName)){
			System.out.println(pkgName + "has permission : " + permName);
			return true;
		}else{
			//PackageManager.PERMISSION_DENIED == pm.checkPermission(permName, pkgName)
			System.out.println(pkgName + "not has permission : " + permName);
			return false;
		}
	}