有用的代碼斷

1：UI設計方面

 設定某張圖片的顏色過濾

     private static final ColorFilter BLACK_CF = new LightingColorFilter(Color.BLUE, Color.BLACK);
    public static Drawable buildDrawable(Context ctx, int drawableId) {
        Drawable d = ctx.getResources().getDrawable(drawableId);
        d.setColorFilter(BLACK_CF);
        return d;
    }

給某個View 設定動畫

  java 代碼

 private AnimationDrawable loadingAnimation;
 private View loginLoading;

  loginLoading = (View)findViewById(R.id.login_loading);

   loadingAnimation = (AnimationDrawable)loginLoading.getBackground();
   loadingAnimation.start();

xml中設定

 
            <View
                android:id="@+id/login_loading"
                android:layout_width="135.0dip"
                android:layout_height="135.0dip"
                android:layout_gravity="center"
                android:background="@anim/login_loading" />

anim (多層動畫，也可設定單層動畫)

 <animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false" >

    <item android:duration="500">
        <layer-list>
            <item android:drawable="@drawable/login_loading_00"/>
            <item android:drawable="@drawable/login_loading_10"/>
        </layer-list>
    </item>
    <item android:duration="500">
        <layer-list>
            <item android:drawable="@drawable/login_loading_01"/>
            <item android:drawable="@drawable/login_loading_11"/>
        </layer-list>
    </item>

</animation-list>

ViewSwitcher的使用

  xml中

         <ViewSwitcher
            android:id="@+id/logindialog_view_switcher"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">          
                        <Button
                            android:id="@+id/login_btn_login"
                            android:layout_width="fill_parent"
                            android:layout_height="45dip"
                            android:background="@drawable/login_btn_selector"
                            android:text="@string/login_dialog_login"
                            android:textSize="@dimen/text_size_20" />
          

            <View
                android:id="@+id/login_loading"
                android:layout_width="135.0dip"
                android:layout_height="135.0dip"
                android:layout_gravity="center"
                android:background="@anim/login_loading" />
        </ViewSwitcher>

   java中：

private Button btn_login;
    private View loginLoading;

  btn_login = (Button)findViewById(R.id.login_btn_login);

   loginLoading = (View)findViewById(R.id.login_loading);

 btn_login.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
           
                mViewSwitcher.showNext();
               
            }
        });

效果：點擊button後 view出現 可以給view設定一個動畫  （一次性）