检查有无相机的权限

检查有无相机的权限

    public void actionCheckPermission(View view)
    {
        String perms = Manifest.permission.CAMERA;
        Integer nRet = 0;
        nRet = ContextCompat.checkSelfPermission(this, perms);
        if (nRet == PERMISSION_GRANTED)
        {
            Toast.makeText(this, "有权限", Toast.LENGTH_LONG).show();
        }
        else if(nRet == PERMISSION_DENIED)
        {
            Toast.makeText(this, "没有权限", Toast.LENGTH_LONG).show();
        }
        else
        {
            Toast.makeText(this, "非法返回值", Toast.LENGTH_LONG).show();
        }
    }

手机权限设置：

设置->授权管理->应用权限管理->权限管理

标签：Toast,show,LONG,相机,LENGTH,nRet,有无,权限
来源： https://www.cnblogs.com/CipherLab/p/12049063.html