Demonstration of loading resources. : Resources « Core Class « Android

1. Android
2. Core Class
3. Resources

Demonstration of loading resources.

    
/*
 * 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 app.test;


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.main);

        TextView tv;
        CharSequence cs;
        String str;

        // Using the Context.getString() convenience method 

        // Using the getString() convenience method, retrieve a string
        // resource that happens 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.

    }
}

//main.xml


<?xml version="1.0" encoding="utf-8"?>
<!-- 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.
-->

<!--
    Demonstrates resources.

    See corresponding Java code:
    com.example.android.apis.content.ResourcesSample
-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/styled_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:textStyle="normal"
        />

    <TextView
        android:id="@+id/plain_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:textStyle="normal"
        />

    <TextView
        android:id="@+id/res1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:textStyle="normal"
        />

</LinearLayout>

   
    
    
    
  

Related examples in the same category