我的移动应用程序有2个帐户类型的用户,即admin和user。如果我希望用户和管理员在登录后显示不同的布局,该怎么办?这是我的登录活动。有人可以帮帮我吗?我是初学者。谢谢。或者任何人都有任何链接指导初学者做这些也可以在这里发布。非常感谢大家。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
connectionClass = new ConnectionClass();
edtuserid = (EditText) findViewById(R.id.edtuserid);
edtpass = (EditText) findViewById(R.id.edtpass);
btnlogin = (Button) findViewById(R.id.btnlogin);
pbbar = (ProgressBar) findViewById(R.id.pbbar);
pbbar.setVisibility(View.GONE);
shp = this.getSharedPreferences("UserInfo", MODE_PRIVATE);
String userid = shp.getString("UserId", "none");
if (userid.equals("none") || userid.trim().equals("")) {
} else {
Intent i = new Intent(LoginActivity.this, MainActivity.class);
startActivity(i);
finish();
}
btnlogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DoLogin doLogin = new DoLogin();
doLogin.execute("");
}
});
}
public class DoLogin extends AsyncTask<String,String,String>
{
String z = "";
Boolean isSuccess = false;
String userid = edtuserid.getText().toString();
String password = edtpass.getText().toString();
@Override
protected void onPreExecute() {
pbbar.setVisibility(View.VISIBLE);
}
@Override
protected void onPostExecute(String r) {
pbbar.setVisibility(View.GONE);
Toast.makeText(LoginActivity.this,r,Toast.LENGTH_SHORT).show();
if(isSuccess) {
Intent i = new Intent(LoginActivity.this, MainActivity.class);
startActivity(i);
finish();
}
}
@Override
protected String doInBackground(String... params) {
if(userid.trim().equals("")|| password.trim().equals(""))
z = "Please enter User Id and Password";
else
{
try {
Connection con = connectionClass.CONN();
if (con == null) {
z = "Error in connection with SQL server";
} else {
String query = "select * from dbo.demo where UserId='" + userid + "' and Password='" + password + "'";
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(query);
if(rs.next())
{
z = "Login successfull";
isSuccess=true;
}
else
{
z = "Invalid Credentials";
isSuccess = false;
}
}
}
catch (Exception ex)
{
isSuccess = false;
z = "Exceptions";
}
}
return z;
}
}
我做过一次这样的项目。为了克服这个登录问题,我们在数据库中添加了一个“角色”列,其中包含admin,user等角色。为admin和user创建2个不同的页面。检查登录凭据后,检查角色,然后相应地重定向。