Android example source code file (ResourcesSample.java)

This example Android source code file (ResourcesSample.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, app, application, charsequence, content, context, os, override, resources, resourcessample, string, textview, ui

The ResourcesSample.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.content;

// 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.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TextView;


/**
 * Demonstration of loading resources.
 * 
 * <p>
 * Each context has a resources object that you can access.  Additionally,
 * the Context class (an Activity is a Context) has a getString convenience
 * method getString() that looks up a string resource.
 *
 * @see StyledText for more depth about using styled text, both with getString()
 *                 and in the layout xml files.
 */
public class ResourcesSample extends Activity
{
    @Override
	protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        // See res/any/layout/resources.xml for this view layout definition.
        setContentView(R.layout.resources);

        TextView tv;
        CharSequence cs;
        String str;

        // ====== Using the Context.getString() convenience method ===========

        // Using the getString() conevenience method, retrieve a string
        // resource that hapepns to have style information.  Note the use of
        // CharSequence instead of String so we don't lose the style info.
        cs = getText(R.string.styled_text);
        tv = (TextView)findViewById(R.id.styled_text);
        tv.setText(cs);

        // Use the same resource, but convert it to a string, which causes it
        // to lose the style information.
        str = getString(R.string.styled_text);
        tv = (TextView)findViewById(R.id.plain_text);
        tv.setText(str);

        // ====== Using the Resources object =================================
        
        // You might need to do this if your code is not in an activity.
        // For example View has a protected mContext field you can use.
        // In this case it's just 'this' since Activity is a context.
        Context context = this;

        // Get the Resources object from our context
        Resources res = context.getResources();

        // Get the string resource, like above.
        cs = res.getText(R.string.styled_text);
        tv = (TextView)findViewById(R.id.res1);
        tv.setText(cs);

        // Note that the Resources class has methods like getColor(),
        // getDimen(), getDrawable() because themes are stored in resources.
        // You can use them, but you might want to take a look at the view
        // examples to see how to make custom widgets.

    }
}