1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.apis.content; 18 19 // Need the following import to get access to the app resources, since this 20 // class is in a sub-package. 21 import com.example.android.apis.R; 22 23 import android.app.Activity; 24 import android.content.Context; 25 import android.content.res.Resources; 26 import android.os.Bundle; 27 import android.widget.TextView; 28 29 30 /** 31 * Demonstration of loading resources. 32 * 33 * <p> 34 * Each context has a resources object that you can access. Additionally, 35 * the Context class (an Activity is a Context) has a getString convenience 36 * method getString() that looks up a string resource. 37 * 38 * @see StyledText for more depth about using styled text, both with getString() 39 * and in the layout xml files. 40 */ 41 public class ResourcesSample extends Activity { 42 @Override 43 protected void onCreate(Bundle savedInstanceState) { 44 super.onCreate(savedInstanceState); 45 46 // See res/any/layout/resources.xml for this view layout definition. 47 setContentView(R.layout.resources); 48 49 TextView tv; 50 CharSequence cs; 51 String str; 52 53 // ====== Using the Context.getString() convenience method =========== 54 55 // Using the getString() convenience method, retrieve a string 56 // resource that happens to have style information. Note the use of 57 // CharSequence instead of String so we don't lose the style info. 58 cs = getText(R.string.styled_text); 59 tv = (TextView)findViewById(R.id.styled_text); 60 tv.setText(cs); 61 62 // Use the same resource, but convert it to a string, which causes it 63 // to lose the style information. 64 str = getString(R.string.styled_text); 65 tv = (TextView)findViewById(R.id.plain_text); 66 tv.setText(str); 67 68 // ====== Using the Resources object ================================= 69 70 // You might need to do this if your code is not in an activity. 71 // For example View has a protected mContext field you can use. 72 // In this case it's just 'this' since Activity is a context. 73 Context context = this; 74 75 // Get the Resources object from our context 76 Resources res = context.getResources(); 77 78 // Get the string resource, like above. 79 cs = res.getText(R.string.styled_text); 80 tv = (TextView)findViewById(R.id.res1); 81 tv.setText(cs); 82 83 // Note that the Resources class has methods like getColor(), 84 // getDimen(), getDrawable() because themes are stored in resources. 85 // You can use them, but you might want to take a look at the view 86 // examples to see how to make custom widgets. 87 88 } 89 } 90 91
