I am new in android. I'm trying to run a simple android code where I try to get value from a EditText field. But every time I am getting empty value. In this code I'm trying to get value of ID field and try to check whether it is empty or not and try to show it in a Toast message. but every time its returning empty.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="368dp"
android:layout_height="495dp"
xmlns:tools="http://schemas.android.com/tools"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="87dp"
android:text="Sign In"
android:textColor="@android:color/black"
android:textColorLink="@android:color/black"
android:textSize="25sp" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="43dp"
android:text="ID"
android:textColor="@android:color/black"
android:textSize="18sp"
android:typeface="normal"
android:layout_below="@+id/textView"
android:layout_alignLeft="@+id/textView5"
android:layout_alignStart="@+id/textView5"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp" />
<EditText
android:id="@+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:hint="Enter ID"
android:layout_alignBaseline="@+id/textView2"
android:layout_alignBottom="@+id/textView2"
android:layout_alignLeft="@+id/editText2"
android:layout_alignStart="@+id/editText2" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="@android:color/black"
android:text="Password"
android:layout_alignBottom="@+id/editText2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="32dp"
android:layout_marginStart="32dp" />
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText"
android:ems="10"
android:hint="Enter Password"
android:inputType="textPassword" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText2"
android:layout_marginTop="32dp"
android:text="SignIn" />
<TextView
android:id="@+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button"
android:layout_centerHorizontal="true"
android:layout_marginTop="54dp"
android:textColor="@android:color/black"
android:textSize="18sp" />
</RelativeLayout>
MainActivity.java
package task.com.helloworld;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Button button;
TextView textView;
EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button)findViewById(R.id.button);
textView = (TextView)findViewById(R.id.textView6);
editText = (EditText)findViewById(R.id.editText);
final String name = editText.getText().toString();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// textView.setText("Hello "+name+", Welcome to Android. ");
if(TextUtils.isEmpty(name))
Toast.makeText(MainActivity.this, "Edit Text is Empty", Toast.LENGTH_LONG).show();
else
Toast.makeText(MainActivity.this, "Edit Text is not Empty", Toast.LENGTH_LONG).show();
}
});
}
}
the value always returning as empty.
Beacuse you are getting that edittext value in onCreate ...that value you have to get after onClicking on button. Try this..
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// textView.setText("Hello "+name+", Welcome to Android. ");
String name = editText.getText().toString();
if(TextUtils.isEmpty(name))
Toast.makeText(MainActivity.this, "Edit Text is Empty", Toast.LENGTH_LONG).show();
else
Toast.makeText(MainActivity.this, "Edit Text is not Empty", Toast.LENGTH_LONG).show();
}
});
In layout you haven't put any text. So it always return empty. If you have any hard-coded text put in layout then it will return text.
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