猜猜紅桃A在哪裏（ImageView單擊事件與透明度處理）

猜猜紅桃A在哪裏（ImageView單擊事件與透明度處理）

新建一個繼承Activity類的ImageViewGameActivity，並設置佈局文件爲：imageviewgame.xml。

首先定義佈局文件。

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

 

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

 

        <ImageView

            android:id="@+id/imageviewgame_image01"

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_margin="10dp"

            android:layout_weight="1"

            android:src="@drawable/p_b1" />

 

        <ImageView

            android:id="@+id/imageviewgame_image02"

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_margin="10dp"

            android:layout_weight="1"

            android:src="@drawable/p_b1" />

 

        <ImageView

            android:id="@+id/imageviewgame_image03"

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_margin="10dp"

            android:layout_weight="1"

            android:src="@drawable/p_b1" />

    </LinearLayout>

 

    <Button

        android:id="@+id/imageviewgame_btn"

        style="@android:style/Widget.Button.Inset"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="@string/sure" />

 

    <TextView

        android:id="@+id/imageviewgame_tv"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="10dp"

        android:gravity="center_horizontal"

        android:text="@string/sure"

        android:textSize="20sp" />

 

</LinearLayout>

效果：

而後在Activity獲取這5個組件。

package lyx.feng.second;

......

public class ImageViewGame extends Activity implements OnClickListener {

    private ImageView image1 = null;

    private ImageView image2 = null;

    private ImageView image3 = null;

    private Button btn = null;

    private TextView tv = null;

    private List<Integer> cards = new ArrayList<Integer>();

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       super.setContentView(R.layout.imageviewgame);

       initViews();

 

       this.btn.setText("再來一次");

       this.btn.setVisibility(View.GONE);

    }

 

    private List<Integer> getRandomCards(List<Integer> cards) {

       Collections.shuffle(cards);

       return cards;

    }

 

    private void setImages(List<Integer> cards) {

       this.image1.setImageResource(cards.get(0));

       this.image2.setImageResource(cards.get(1));

       this.image3.setImageResource(cards.get(2));

    }

 

    private void initViews() {

       this.image1 = (ImageView) super

              .findViewById(R.id.imageviewgame_image01);

       this.image2 = (ImageView) super

              .findViewById(R.id.imageviewgame_image02);

       this.image3 = (ImageView) super

              .findViewById(R.id.imageviewgame_image03);

       this.btn = (Button) super.findViewById(R.id.imageviewgame_btn);

       this.tv = (TextView) super.findViewById(R.id.imageviewgame_tv);

 

       cards.add(R.drawable.p_h_2);

       cards.add(R.drawable.p_h_4);

       cards.add(R.drawable.p_h_7);

 

       this.image1.setOnClickListener(this);

       this.image2.setOnClickListener(this);

       this.image3.setOnClickListener(this);

       this.btn.setOnClickListener(this);

       this.tv.setVisibility(View.GONE);

    }

 

    @Override

    public void onClick(View v) {

       switch (v.getId()) {

       case R.id.imageviewgame_image01:

           showcard();

           break;

       case R.id.imageviewgame_image02:

           showcard();

           break;

       case R.id.imageviewgame_image03:

           showcard();

           break;

       case R.id.imageviewgame_btn:

           this.image1.setImageResource(R.drawable.p_b1);

           this.image2.setImageResource(R.drawable.p_b1);

           this.image3.setImageResource(R.drawable.p_b1);

           this.image1.setClickable(true);

           this.image2.setClickable(true);

           this.image3.setClickable(true);

           this.btn.setVisibility(View.GONE);

           break;

       }

    }

 

    private void showcard() {

       setImages(getRandomCards(cards));

       this.image1.setClickable(false);

       this.image2.setClickable(false);

       this.image3.setClickable(false);

       this.btn.setVisibility(View.VISIBLE);

    }

}