Apad Qzone項目總結(二)---換膚功能實現！！！

Hi,大家好，快元旦啦，提前祝大家元旦快樂，(*^__^*) 嘻嘻，今天給大家分享的是Apad Qzone換膚功能的實現，我們首先看下效果:

圖1:默認的皮膚.

圖2：點擊菜單護膚按鈕，應用更換皮膚.

通過上面的效果圖可以看出Apad Qzone的換膚功能其實是很簡單實現的，由於整個應用採取了單Activity實現方式，更換背景其實就是實現了更換主程序的Activity的背景。

這裏我們事先把幾套皮膚放在res/drawable目錄裏，然後用SharedPreferences來記錄當前皮膚的資源id.然後在程序啓動時加載Activity背景。

爲了讓大家更容易理解，我這裏簡單做了一個Demo,步驟分別如下:

第一步:新建一個Android工程命名爲SkinDemo.程序結構如下:

第二步:新建一個皮膚管理類SkinSettingManager.java,代碼如下:

package com.tutor.skindemo;


import android.app.Activity;
import android.content.SharedPreferences;

/**
 * PadQzone皮膚管理器
 * @author frankiewei
 *
 */
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);
    }

    /**
     * 獲取當前程序的皮膚序號
     *
     * @return
     */
    public int getSkinType() {
        String key = "skin_type";
        return skinSettingPreference.getInt(key, 0);
    }

    /**
     * 把皮膚序號寫到全局設置裏去
     *
     * @param j
     */
    public void setSkinType(int j) {
        SharedPreferences.Editor editor = skinSettingPreference.edit();
        String key  = "skin_type";

        editor.putInt(key, j);
        editor.commit();
    }

    /**
     * 獲取當前皮膚的背景圖資源id
     *
     * @return
     */
    public int getCurrentSkinRes() {
        int skinLen = skinResources.length;
        int getSkinLen = getSkinType();
        if(getSkinLen >= skinLen){
            getSkinLen = 0;
        }

        return skinResources[getSkinLen];
    }

    /**
     * 用於導航欄皮膚按鈕切換皮膚
     */
    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();

        }


    }

    /**
     * 用於初始化皮膚
     */
    public void initSkins(){
        mActivity.getWindow().setBackgroundDrawableResource(getCurrentSkinRes());
    }

}

package com.tutor.skindemo; import android.app.Activity; import android.content.SharedPreferences; /** * PadQzone皮膚管理器 * @author frankiewei * */ 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); } /** * 獲取當前程序的皮膚序號 * * @return */ public int getSkinType() { String key = "skin_type"; return skinSettingPreference.getInt(key, 0); } /** * 把皮膚序號寫到全局設置裏去 * * @param j */ public void setSkinType(int j) { SharedPreferences.Editor editor = skinSettingPreference.edit(); String key = "skin_type"; editor.putInt(key, j); editor.commit(); } /** * 獲取當前皮膚的背景圖資源id * * @return */ public int getCurrentSkinRes() { int skinLen = skinResources.length; int getSkinLen = getSkinType(); if(getSkinLen >= skinLen){ getSkinLen = 0; } return skinResources[getSkinLen]; } /** * 用於導航欄皮膚按鈕切換皮膚 */ 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(); } } /** * 用於初始化皮膚 */ public void initSkins(){ mActivity.getWindow().setBackgroundDrawableResource(getCurrentSkinRes()); } } 第三步:在應用的主Activity--即SkinDemoActivity.java調用，代碼如下:

package com.tutor.skindemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;

public class SkinDemoActivity extends Activity {

    private SkinSettingManager mSettingManager;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //初始化皮膚
        mSettingManager = new SkinSettingManager(this);
        mSettingManager.initSkins();
    }
    //這裏爲了簡單實現，實現換膚
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        mSettingManager.toggleSkins();
        return super.onTouchEvent(event);
    }

}

package com.tutor.skindemo; import android.app.Activity; import android.os.Bundle; import android.view.MotionEvent; public class SkinDemoActivity extends Activity { private SkinSettingManager mSettingManager; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //初始化皮膚 mSettingManager = new SkinSettingManager(this); mSettingManager.initSkins(); } //這裏爲了簡單實現，實現換膚 @Override public boolean onTouchEvent(MotionEvent event) { mSettingManager.toggleSkins(); return super.onTouchEvent(event); } }
以上三步就大功告成啦！，哈哈，很容易吧，今天就講到這裏，提前祝大家元旦快樂！！！

源代碼點擊進入==>