使用动态生成的Textview创建Android TextSwitcher

Question

我打算用TextView创建一个类似画廊的TextSwitcher，如下所示：

请参阅图像http://img441.imageshack.us/img441/5610/textp.png

当我单击选定的TextView时，将启动一个活动。

我已经读过Android API演示和许多其他帖子，但我仍然不能创建这样的东西。APIdemo没有向我展示如何在TextSwitcher中使用TextView。

我相信http://www.java2s.com/Open-Source/Android/android-core/platform-frameworks-base/android/widget/TextSwitcher.java.htm很有用，但我不知道如何使用它并链接到我的activity onCreate方法并添加到动态生成的textview中。

与XML内容一起工作的解决方案是什么？

Answer 1

我无法创建具有动态TextView的TextSwitcher。

相反，我的替代解决方案是使用ImageView。这样，我就可以创建一个水平滚动的画廊，如链接所示。

Answer 2

在API demos中，我从以下路径获得了以下示例

C:\Program Files\Android\android-sdk-windows\samples\android-10\ApiDemos\res\layout

和

C:\Program Files\Android\android-sdk-windows\samples\android-10\ApiDemos\src\com\example\android\apis\view

TextSwitcher1.java

public class TextSwitcher1 extends Activity implements
   ViewSwitcher.ViewFactory, View.OnClickListener {

   private TextSwitcher mSwitcher;

   private int mCounter = 0;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);

       setContentView(R.layout.text_switcher_1);

       mSwitcher = (TextSwitcher) findViewById(R.id.switcher);
       mSwitcher.setFactory(this);

       Animation in = AnimationUtils.loadAnimation(this,
               android.R.anim.fade_in);
       Animation out = AnimationUtils.loadAnimation(this,
               android.R.anim.fade_out);
       mSwitcher.setInAnimation(in);
       mSwitcher.setOutAnimation(out);

       Button nextButton = (Button) findViewById(R.id.next);
       nextButton.setOnClickListener(this);

       updateCounter();
   }

   public void onClick(View v) {
       mCounter++;
       updateCounter();
   }

   private void updateCounter() {
       mSwitcher.setText(String.valueOf(mCounter));
   }

   public View makeView() {
       TextView t = new TextView(this);
       t.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL);
       t.setTextSize(36);
       return t;
   }

}

TextSwitcher_1.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2007 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button android:id="@+id/next"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text_switcher_1_next_text" />

    <TextSwitcher android:id="@+id/switcher"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>