Tuesday, 30 December 2014

Multiple Buttons

Here is an example for multiple buttons, even we can handle multiple buttons with single method(onClick(View)) or with unanimous object of OnClickListener interface,





activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button_save"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_save" />

    <Button
        android:id="@+id/button_cancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_cancel" />

</LinearLayout>

strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">Multiple Buttons Example</string>
    <string name="button_save">Save</string>
    <string name="button_cancel">Cancel</string>
</resources>

MainActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import com.swamy.multiplebuttonsexample.R;

public class MainActivity extends Activity implements OnClickListener {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button_save = (Button) findViewById(R.id.button_save);
Button button_cancel = (Button) findViewById(R.id.button_cancel);

button_save.setOnClickListener(this);
button_cancel.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_save:
Toast.makeText(getApplicationContext(),
"You have clicked on Save button", Toast.LENGTH_SHORT)
.show();
break;
case R.id.button_cancel:
Toast.makeText(getApplicationContext(),
"You have clicked on Cancel button", Toast.LENGTH_SHORT)
.show();
break;
}
}
}


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