通过应用程序内置资源实现换肤,典型的应用为QQ空间中换肤的实现. 应用场景为: 应用一般不大,且页面较少,风格相对简单,一般只用实现部分资源或者只用实现背景的更换.
此种换肤方式实现的思路:
1. 把几套皮肤放在res/drawable目录里,然后用SharedPreferences来记录当前皮肤的资源id.然后在程序启动时加载Activity背景。
2. 主要的实现在皮肤管理器SkinManager类中. 将皮肤资源的ID加入集合中. 由该类同一调度皮肤更换,如初始化皮肤,获取当前皮肤符号以及具体的对应资源的更换皮肤.
接下来看一下效果图:
内置皮肤的实现相对比较简单,下面直接上代码:
AndroidMainfest.xml
- <?xml version="1.0" encoding="utf-8"?>
- <manifest xmlns:android="http://schemas.android.com/apk/res/android"
- package="com.tony.skindemo"
- android:versionCode="1"
- android:versionName="1.0" >
- <uses-sdk android:minSdkVersion="8" />
- <application
- android:icon="@drawable/ic_launcher"
- android:label="@string/app_name" >
- <activity
- android:label="@string/app_name"
- android:name="com.tony.skindemo.SkinDemoActivity" >
- <intent-filter >
- <action android:name="android.intent.action.MAIN" />
- <category android:name="android.intent.category.LAUNCHER" />
- </intent-filter>
- </activity>
- </application>
- </manifest>
布局文件:
main.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:orientation="vertical" >
- <TextView
- android:textColor="#ff00ff"
- android:text="程序皮肤更换"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content" />
- <RadioGroup
- android:id="@+id/skin_options"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- >
- <RadioButton
- android:layout_weight="1"
- android:id="@+id/radioButton1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="风格1" />
- <RadioButton
- android:layout_weight="1"
- android:id="@+id/radioButton2"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="风格2" />
- <RadioButton
- android:layout_weight="1"
- android:id="@+id/radioButton3"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="风格3" />
- <RadioButton
- android:layout_weight="1"
- android:id="@+id/radioButton4"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="风格4" />
- <RadioButton
- android:layout_weight="1"
- android:id="@+id/radioButton5"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="风格5" />
- </RadioGroup>
- </LinearLayout>
程序主Activity
- package com.tony.skindemo;
- import android.app.Activity;
- import android.os.Bundle;
- import android.view.MotionEvent;
- import android.view.Window;
- import android.view.WindowManager;
- import android.widget.RadioButton;
- import android.widget.RadioGroup;
- import android.widget.RadioGroup.OnCheckedChangeListener;
- public class SkinDemoActivity extends Activity {
- private SkinSettingManager mSettingManager;
- private RadioButton radioButton1;
- private RadioButton radioButton2;
- private RadioButton radioButton3;
- private RadioButton radioButton4;
- private RadioButton radioButton5;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- // 取消标题栏
- requestWindowFeature(Window.FEATURE_NO_TITLE);
- // 完成窗体的全屏显示 // 取消掉状态栏
- getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
- WindowManager.LayoutParams.FLAG_FULLSCREEN);
- setContentView(R.layout.main);
- // 初始化皮肤
- mSettingManager = new SkinSettingManager(this);
- mSettingManager.initSkins();
- //通过单选按钮设置皮肤(可自定义更换的方式,如导航栏,也可以加上预览功能,此处不再实现)
- radioButton1 = (RadioButton) findViewById(R.id.radioButton1);
- radioButton2 = (RadioButton) findViewById(R.id.radioButton2);
- radioButton3 = (RadioButton) findViewById(R.id.radioButton3);
- radioButton4 = (RadioButton) findViewById(R.id.radioButton4);
- radioButton5 = (RadioButton) findViewById(R.id.radioButton5);
- RadioGroup radioGroup = (RadioGroup) findViewById(R.id.skin_options);
- radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
- @Override
- public void onCheckedChanged(RadioGroup group, int checkedId) {
- switch (checkedId) {
- case R.id.radioButton1:
- mSettingManager.changeSkin(1);
- break;
- case R.id.radioButton2:
- mSettingManager.changeSkin(2);
- break;
- case R.id.radioButton3:
- mSettingManager.changeSkin(3);
- break;
- case R.id.radioButton4:
- mSettingManager.changeSkin(4);
- break;
- case R.id.radioButton5:
- mSettingManager.changeSkin(5);
- break;
- default:
- break;
- }
- }
- });
- }
- // 这里为了简单实现,实现换肤
- public boolean onTouchEvent(MotionEvent event) {
- mSettingManager.toggleSkins();
- return super.onTouchEvent(event);
- }
- }
- <pre name="code" class="java"></pre><pre></pre><p></p><pre></pre>皮肤管理器:<p></p><p></p><pre name="code" class="java">package com.tony.skindemo;
- import android.app.Activity;
- import android.content.SharedPreferences;
- /**
- * 皮肤管理器
- * @author tony
- *
- */
- public class SkinSettingManager {
- public final static String SKIN_PREF = "skinSetting";
- public SharedPreferences skinSettingPreference;
- private int[] skinResources = { R.drawable.default_wallpaper,
- R.drawable.wallpaper_c,R.drawable.wallpaper_d,R.drawable.wallpaper_f,
- R.drawable.wallpaper_g
- };
- private Activity mActivity;
- public SkinSettingManager(Activity activity) {
- this.mActivity = activity;
- skinSettingPreference = mActivity.getSharedPreferences(SKIN_PREF, 3);
- }
- /**
- * 获取当前程序的皮肤序号
- *
- * @return
- */
- public int getSkinType() {
- String key = "skin_type";
- return skinSettingPreference.getInt(key, 0);
- }
- /**
- * 把皮肤序号写到全局设置里去
- *
- * @param j
- */
- public void setSkinType(int j) {
- SharedPreferences.Editor editor = skinSettingPreference.edit();
- String key = "skin_type";
- editor.putInt(key, j);
- editor.commit();
- }
- /**
- * 获取当前皮肤的背景图资源id
- *
- * @return
- */
- public int getCurrentSkinRes() {
- int skinLen = skinResources.length;
- int getSkinLen = getSkinType();
- if(getSkinLen >= skinLen){
- getSkinLen = 0;
- }
- return skinResources[getSkinLen];
- }
- public void toggleSkins(){
- int skinType = getSkinType();
- if(skinType == skinResources.length - 1){
- skinType = 0;
- }else{
- skinType ++;
- }
- setSkinType(skinType);
- mActivity.getWindow().setBackgroundDrawable(null);
- try {
- mActivity.getWindow().setBackgroundDrawableResource(getCurrentSkinRes());
- } catch (Throwable e) {
- e.printStackTrace();
- }
- }
- /**
- * 用于初始化皮肤
- */
- public void initSkins(){
- mActivity.getWindow().setBackgroundDrawableResource(getCurrentSkinRes());
- }
- /**
- * 随即切换一个背景皮肤
- */
- public void changeSkin(int id) {
- setSkinType(id);
- mActivity.getWindow().setBackgroundDrawable(null);
- try {
- mActivity.getWindow().setBackgroundDrawableResource(getCurrentSkinRes());
- } catch (Throwable e) {
- e.printStackTrace();
- }
- }
- }
- </pre><br><p></p><p>就这样,通过程序内置皮肤的基本功能完成了.</p><p>若想在自己的应用中实现,仍需注意以下几点(实现起来并不复杂,此处不再写具体实现):<br></p><p>1. 实现多个activity的更换皮肤. 需要利用自定义MyApplication类,继承自Application. 并加入activity的集合属性.用于存储应用所有的activity<br></p><p> 修改SkinManager,在更换皮肤时,从application中取出该集合,进行遍历并更换皮肤</p><p><br></p><p>2. 可以优化用户体验,通过导航栏方式进入更换皮肤界面,并可以加入预览功能,当确定修改配置后,才完成更换皮肤功能.</p><p>3. 加入style.theme等资源,实现更加复杂的皮肤更换. 具体实现同更换背景.<br></p><p><br></p><p><br></p><p><br></p><p><br></p>