Android實現動畫PopupWindow

jopen 10年前發布 | 36K 次閱讀 Android開發移動開發 PopupWindow

這是主Activity代碼：

public class RollActivity extends Activity {
    private View view;
    private Button btn;
    private PopupWindow mPopupWindow;
    private View[] btns;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
//      LinearLayout layout=(LinearLayout) view.findViewById(R.id.layout_main);
//      //設置背景圖片旋轉180
//      Bitmap mBitmap=setRotate(R.drawable.bg_kuang);
//      BitmapDrawable drawable=new BitmapDrawable(mBitmap);
//      layout.setBackgroundDrawable(drawable);

        btn=(Button) this.findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                showPopupWindow(btn);
            }

        });

        initPopupWindow(R.layout.popwindow);

    }

    private void initPopupWindow(int resId){
        LayoutInflater mLayoutInflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
        view = mLayoutInflater.inflate(resId, null);

        mPopupWindow = new PopupWindow(view, 400,LayoutParams.WRAP_CONTENT);
//      mPopupWindow.setBackgroundDrawable(new BitmapDrawable());//必須設置background才能消失
        mPopupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_frame));
        mPopupWindow.setOutsideTouchable(true);

        //自定義動畫
//      mPopupWindow.setAnimationStyle(R.style.PopupAnimation);
        //使用系統動畫
        mPopupWindow.setAnimationStyle(android.R.style.Animation_Dialog);
        mPopupWindow.update();
        mPopupWindow.setTouchable(true);
        mPopupWindow.setFocusable(true);

        btns=new View[3];
        btns[0]=view.findViewById(R.id.btn_0);
        btns[1]=view.findViewById(R.id.btn_1);
        btns[2]=view.findViewById(R.id.btn_2);
        btns[0].setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //doSomething
            }
        });
        btns[1].setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //doSomething
            }
        });
        btns[2].setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //doSomething
            }
        });
    }
    private void showPopupWindow(View view) {
        if(!mPopupWindow.isShowing()){
//          mPopupWindow.showAsDropDown(view,0,0);
            mPopupWindow.showAtLocation(view, Gravity.CENTER, 0, 0);
        }
    }
    public Bitmap setRotate(int resId) {
        Matrix mFgMatrix = new Matrix();
        Bitmap mFgBitmap = BitmapFactory.decodeResource(getResources(), resId);
        mFgMatrix.setRotate(180f);
        return mFgBitmap=Bitmap.createBitmap(mFgBitmap, 0, 0, 
                mFgBitmap.getWidth(), mFgBitmap.getHeight(), mFgMatrix, true);
    }
}

PopupWindow的布局popwindow.xml
注意3個LinearLayout里必須設置clickable和background，這樣當點擊上去的時候才會有點擊效果。
android:clickable="true"
android:background="@drawable/state_btn_pressed"

<?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="wrap_content" 
        android:orientation="horizontal"
        android:id="@+id/layout_main"
        >
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:gravity="center_horizontal"
            android:clickable="true"
            android:background="@drawable/state_btn_pressed"
            android:layout_weight="1"
            android:id="@+id/btn_0"
            >
            <ImageView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:scaleType="fitCenter"
                android:src="@drawable/ic_call"
                >
            </ImageView>
            <TextView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:textColor="#000000"
                android:textSize="18px"
                android:text="電話">
            </TextView>
        </LinearLayout>
        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:gravity="center_horizontal"
            android:clickable="true"
            android:background="@drawable/state_btn_pressed"
            android:layout_weight="1"
            android:id="@+id/btn_1"
            >
            <ImageView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:scaleType="fitCenter"
                android:src="@drawable/ic_home"
                >
            </ImageView>
            <TextView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:textColor="#000"
                android:textSize="18px"
                android:text="空間">
            </TextView>
        </LinearLayout>

        <LinearLayout android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:gravity="center_horizontal"
            android:clickable="true"
            android:background="@drawable/state_btn_pressed"
            android:layout_weight="1"
            android:id="@+id/btn_2"
            >
            <ImageView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:scaleType="fitCenter"
                android:src="@drawable/ic_sms"
                >
            </ImageView>
            <TextView android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:textColor="#000"
                android:textSize="18px"
                android:text="短信"
                >
            </TextView>
        </LinearLayout>
</LinearLayout>

state_btn_pressed.xml，點擊的效果：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
        android:drawable="@drawable/bg_btn_pressed"
        android:padding="0dp"/>
</selector>

Android 模仿迅雷的 PopupWindow 出現/消失動畫
出現：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale android:fromXScale="0.6" android:toXScale="1.1"
        android:fromYScale="0.6" android:toYScale="1.1" android:pivotX="50%"
        android:pivotY="50%" android:duration="200" />
    <scale android:fromXScale="1.0" android:toXScale="0.91"
        android:fromYScale="1.0" android:toYScale="0.91" android:pivotX="50%"
        android:pivotY="50%" android:duration="400" android:delay="200" />
    <alpha android:interpolator="@android:anim/linear_interpolator"
        android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="400" />
</set>

消失：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale android:fromXScale="1.0" android:toXScale="1.25"
        android:fromYScale="1.0" android:toYScale="1.25" android:pivotX="50%"
        android:pivotY="50%" android:duration="200" />
    <scale android:fromXScale="1.0" android:toXScale="0.48"
        android:fromYScale="1.0" android:toYScale="0.48" android:pivotX="50%"
        android:pivotY="50%" android:duration="400" android:delay="200" />
    <alpha android:interpolator="@android:anim/linear_interpolator"
        android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="400" />
</set>

最后用下面的 XML 封裝：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="PopupAnimation" parent="android:Animation"
        mce_bogus="1">
        <item name="android:windowEnterAnimation">@anim/anim_dialog_show</item>
        <item name="android:windowExitAnimation">@anim/anim_dialog_hide</item>
    </style>
</resources>

來自：http://blog.csdn.net/way_ping_li/article/details/7943661

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