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Android example source code file (Forwarding.java)
This example Android source code file (Forwarding.java) is included in the DevDaily.com
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Warehouse" project. The intent of this project is to help you "Learn
Android by Example" TM.
The Forwarding.java Android example source code
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.apis.app;
// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
* <p>Example of removing yourself from the history stack after forwarding to
* another activity. This can be useful, for example, to implement
a confirmation dialog before the user goes on to another activity -- once the
user has confirmed this operation, they should not see the dialog again if they
go back from it.</p>
<p>Note that another way to implement a confirmation dialog would be as
an activity that returns a result to its caller. Either approach can be
useful depending on how it makes sense to structure the application.</p>
<h4>Demo
App/Activity/Receive Result
<h4>Source files
<table class="LinkTable">
<tr>
<td class="LinkColumn">src/com.example.android.apis/app/Forwarding.java |
<td class="DescrColumn">Forwards the user to another activity when its button is pressed
</tr>
<tr>
<td class="LinkColumn">/res/any/layout/forwarding.xml
<td class="DescrColumn">Defines contents of the Forwarding screen
</tr>
</table>
*/
public class Forwarding extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.forwarding);
// Watch for button clicks.
Button goButton = (Button)findViewById(R.id.go);
goButton.setOnClickListener(mGoListener);
}
private OnClickListener mGoListener = new OnClickListener()
{
public void onClick(View v)
{
// Here we start the next activity, and then call finish()
// so that our own will stop running and be removed from the
// history stack.
Intent intent = new Intent();
intent.setClass(Forwarding.this, ForwardTarget.class);
startActivity(intent);
finish();
}
};
}
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