Android 打造自己的个性化应用(二):应用程序内置资源实现换肤功能

长平狐 发布于 2012/09/03 12:28
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    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);
	}


}







皮肤管理器:

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();
		}
	}

}

就这样,通过程序内置皮肤的基本功能完成了.

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):

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

    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


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.

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.






原文链接:http://blog.csdn.net/t12x3456/article/details/7933382
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