Android 给应用定制皮肤

Android 给应用定制皮肤

导读：皮肤也就是相关的资源文件单独放置在某个工程中,一种皮肤一个工程文件.一个工程包括N多的资源文件,多个工程间资源的关系是,文件名,资源ID等完全一样.

在实现程序功能的同时，如果能让程序界面更加美观，有锦上添花之妙.
先说思路:
1）皮肤也就是相关的资源文件单独放置在某个工程中,一种皮肤一个工程文件.一个工程包括N多的资源文件,多个工程间资源的关系是,文件名,资源ID等完全一样.不同的可能是图片资源,style等的设置不一样.
2）皮肤工程在AndroidManifest.xml中配置android:sharedUserId="com.eric.skinmain".
     表明允许com.eric.skinmain访问本工程中的资源文件. com.eric.skinmain是主项目的包名
3）主项目通过 this.createPackageContext("com.eric.blackskin",Context.CONTEXT_IGNORE_SECURITY);
获取到com.eric.blackskin对应的Context,然后通过返回的context对象就可以访问到com.eric.blackskin中的任何资源,如同访问自身的资源一样.

	public class main extends Activity {
	        /** Called when the activity is first created. */
	        private LinearLayout showBg;
	        private Button btn;
	        private Context green_skin_Context = null;
	        private Context black_skin_Context = null;
	        int flag = 0;

	        @Override
	        public void onCreate(Bundle savedInstanceState) {
	                super.onCreate(savedInstanceState);
	                setContentView(R.layout.main);
	                showBg = (LinearLayout) findViewById(R.id.linear_layout_1);
	                try {
	                        green_skin_Context = this.createPackageContext(
	                                        "com.eric.greenskin", Context.CONTEXT_IGNORE_SECURITY);
	                } catch (NameNotFoundException e) {
	                        e.printStackTrace();
	                }
	                try {
	                        black_skin_Context = this.createPackageContext(
	                                        "com.eric.blackskin", Context.CONTEXT_IGNORE_SECURITY);
	                } catch (NameNotFoundException e) {
	                        e.printStackTrace();
	                }
	                btn = (Button) findViewById(R.id.btn_change_skin);
	                btn.setOnClickListener(new OnClickListener() {
	                        @Override
	                        public void onClick(View v) {
	                                if (flag == 0) {
	                                        showBg.setBackgroundDrawable(green_skin_Context
	                                                        .getResources().getDrawable(R.drawable.bg));
	                                        btn.setBackgroundDrawable(green_skin_Context
	                                                        .getResources().getDrawable(R.drawable.btn_normal));
	                                       
	                                        flag = 1;
	                                } else if (flag == 1) {
	                                        showBg.setBackgroundDrawable(black_skin_Context
	                                                        .getResources().getDrawable(R.drawable.bg));
	                                        btn.setBackgroundDrawable(black_skin_Context
	                                                        .getResources().getDrawable(R.drawable.btn_normal));
	                                        flag = 0;
	                                }

	                        }

	                });
	        }
	}

http://www.eoe.cn/uploadfile/2011/1217/20111217103957393.rar
http://www.eoe.cn/uploadfile/2011/1217/20111217103958659.rar
http://www.eoe.cn/uploadfile/2011/1217/20111217103958762.rar