Android Question
clearing different edittexts with different buttons while reusing same code
I have two different edittext fields, each with a 'clear' button to clear the inputted text. I can clear both fields like so:
XML:
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/fieldOneInput"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/clearButtonText"
android:id="@+id/clearTextField1"
android:onClick="clearTextField1"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/fieldTwoInput"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/clearButtonText"
android:id="@+id/clearTextField2"
android:onClick="clearTextField2"/>
Java:
public void clearTextField1(View view){
EditText fieldOneInput = (EditText) findViewById(R.id.fieldOneInput);
fieldOneInput.setText("");
}
public void clearTextField2(View view){
EditText fieldTwoInput = (EditText) findViewById(R.id.fieldTwoInput);
fieldOneInput.setText("");
}
This isn't practical if I have multiple edittexts each with a 'clear' button. How would I go about clearing different edittexts fields using different buttons while reusing the same (java) code?
Answer Source
You can achieve this using following code:
public class AbcActivity extends Activity implements View.OnClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//... your code here, to get button objects from xml file
button1.setOnClickListener(this);
button2.setOnClickListener(this);
button3.setOnClickListener(this);
button4.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.button1:
clearEditText(R.id.editText1);
break;
case R.id.button2:
clearEditText(R.id.editText2);
break;
case R.id.button3:
clearEditText(R.id.editText3);
break;
case R.id.button4:
clearEditText(R.id.editText4);
break;
}
}
private void clearEditText(int editTextId) {
findViewById(editTextId).setText("");
}
}