http://wang-peng1.iteye.com/blog/572892
http://www.bianceng.cn/OS/extra/201011/20561_3.htm
http://news.wangmeng.cn/detailNews/2183
ViewFlipper的使用
http://wang-peng1.iteye.com/blog/572892
[功能]
1. ViewFlipper 可以包含多个View 且View之间的切换有Animation 比如：渐变效果
[代码]
1. 创建包含ViewFlipper 的main.xml 还包含2个Button 用于各个View切换
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<Button
android:id="@+id/previousButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Previous"
/>
<Button
android:id="@+id/nextButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Next"
/>
</LinearLayout>
<ViewFlipper
android:id="@+id/flipper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
>
</ViewFlipper>
</LinearLayout>
2. 设定 Animation 效果
flipper = (ViewFlipper) findViewById(R.id.flipper);
flipper.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in));
flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out));
3. 在 ViewFlipper 里面增加各种View
flipper.addView(addTextByText("HelloAndroid"));
flipper.addView(addImageById(R.drawable.beijing_003_mb5ucom));
flipper.addView(addTextByText("eoe.Android"));
flipper.addView(addImageById(R.drawable.beijing_004_mb5ucom));
flipper.addView(addTextByText("Gryphone"));
ublic View addTextByText(String text){
TextView tv = new TextView(this);
tv.setText(text);
tv.setGravity(1);
return tv;
}
public View addImageById(int id){
ImageView iv = new ImageView(this);
iv.setImageResource(id);
return iv;
}
4. View 切换
* 下一个View
flipper.showNext();
* 上一个View
flipper.showPrevious();
* 任意一个View
flipper.setDisplayedChild(2);
下面是一个android API demo:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.ViewFlipper;
public class Animation2 extends Activity implements
AdapterView.OnItemSelectedListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animation_2);
mFlipper = ((ViewFlipper) this.findViewById(R.id.flipper));
mFlipper.startFlipping();
Spinner s = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, mStrings);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s.setAdapter(adapter);
s.setOnItemSelectedListener(this);
}
public void onItemSelected(AdapterView parent, View v, int position, long id) {
switch (position) {
case 0:
mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_up_in));
mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_up_out));
break;
case 1:
mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_left_in));
mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
R.anim.push_left_out));
break;
case 2:
mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in));
mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out));
break;
default:
mFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
R.anim.hyperspace_in));
mFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
R.anim.hyperspace_out));
break;
}
}
public void onNothingSelected(AdapterView parent) {
}
private String[] mStrings = {
"Push up", "Push left", "Cross fade", "Hyperspace"};
private ViewFlipper mFlipper;
}
<?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:orientation="vertical"
android:padding="10dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ViewFlipper android:id="@+id/flipper"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:flipInterval="2000"
android:layout_marginBottom="20dip" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="26sp"
android:text="@string/animation_2_text_1"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="26sp"
android:text="@string/animation_2_text_2"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="26sp"
android:text="@string/animation_2_text_3"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="26sp"
android:text="@string/animation_2_text_4"/>
</ViewFlipper>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dip"
android:text="@string/animation_2_instructions"
/>
<Spinner android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
android 自带的TextSwitcher例子：
import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher;
/**
* Uses a TextSwitcher.
*/
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);
mSwitcher.setText(String.valueOf(mCounter));
}
public void onClick(View v) {
mCounter++;
mSwitcher.setText(String.valueOf(mCounter));
}
// 重写 ViewSwitcher.ViewFactory 的 makeView()方法，返回一个 View，TextSwitcher 交换时使用
@Override
public View makeView() {
TextView textView = new TextView(this);
textView.setGravity(Gravity.CENTER);
textView.setTextSize(36);
return textView;
}
}
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