CODEWITHSUNDEEP
android
Angel
Angel

Reputation: 1

Registration screen Android

I'm am doing a registration screen as a first page in my application, in the MainActivity.java I put :

public class MainActivity extends Activity {

       private EditText  username=null;
       private EditText  password=null;
       private TextView attempts;
       private Button login;
       int counter = 3;
       @Override
       protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          username = (EditText)findViewById(R.id.editText1);
          password = (EditText)findViewById(R.id.editText2);
          attempts = (TextView)findViewById(R.id.textView3);
          attempts.setText(Integer.toString(counter));
          login = (Button)findViewById(R.id.button1);
       }

       public void login(View view){
          if(username.getText().toString().equals("admin") && 
          password.getText().toString().equals("admin")){
          Toast.makeText(getApplicationContext(), "Redirecting...", 
          Toast.LENGTH_SHORT).show();
       }    
       else{
          Toast.makeText(getApplicationContext(), "Wrong Credentials",
          Toast.LENGTH_SHORT).show();
          attempts.setBackgroundColor(Color.RED);   
          counter--;
          attempts.setText(Integer.toString(counter));
          if(counter==0){
             login.setEnabled(false);
          }

       }}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

In the xml page I put :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="30dp"
        android:layout_marginTop="92dp"
        android:text="username"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="36dp"
        android:text="password"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_marginLeft="30dp"
        android:layout_toRightOf="@+id/textView1"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView2"
        android:layout_alignLeft="@+id/editText1"
        android:ems="10"
        android:inputType="textPassword" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="72dp"
        android:text="attempts" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/textView3"
        android:layout_below="@+id/textView3"
        android:layout_marginTop="42dp"
        android:text="login" />

</RelativeLayout>

The error I get is in the java code when writing : 

username = (EditText)findViewById(R.id.editText1);

editText1 cannot be resolved or is not a field. Same to editText2 , textView3 and button1

Please any help ?

Upvotes: 0

Views: 143

Answers (4)

user3387525
user3387525

Reputation:

I have own solution.I hope it helps to you .

In Project->Clean I select "Clean projects selected below", select my project(s) and check "Start a build immediately" with "Build only selected projects".

Then go to Window->Preferences->General->Keys, search "Build clean" and enter my own binding for this command. For example, Ctrl + D

Then, when I press Ctrl + D and Enter I have clean and build.

Upvotes: 0

Zusee Weekin
Zusee Weekin

Reputation: 1358

First Clean and rebuild your project. If no luck then try the following.

Sometimes this is happening in xml layout files when missing a closing tag or something like that. Just double check your xml to make sure that you didn't forget something. Also check <?xml version="1.0" encoding="utf-8"?> is in the top of the layout file.

Upvotes: 0

Zied R.
Zied R.

Reputation: 4964

First , save the file (layout) , and try clean and build the project

Then : change the declaration to : 

  private EditText  username;
       private EditText  password;

Also change the name of login method because you have a button named login to loginFunction for example,

 public void loginFunction(View view)

ans associate this method to button login in setOnclickListener :

login.setOnclickListener(loginFunction)

Upvotes: 0

hendrikbeck
hendrikbeck

Reputation: 670

When you assign an ID like @+id/editText1 in your layout file, your IDE should usually take care of generating the values in R.java for you. If that code generation step hasn't happened or has failed for some reason, then R.id.editText1 won't be available and you'll get the error you described.

Which IDE are you using? Can you clean and rebuild the project?

Did you have a look at R.java to see if your field is in there? For each ID in any of the layout files you should see a constant generated in there, like this:

public final class R {
  (...)

  public static final class id {
    public static final int editText1 = ...;
  }

  (...)
}

Upvotes: 1

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