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watak


ImageSwitcher ?

翻譯人:wallace2010

譯者博客:http://blog.csdn.net/springiscoming2008

版本:Android 2.2 r1

?

public class ImageSwitcher extends ViewSwitcher

?

java.lang.Object

android.view.View

? ???? ???????? android.view.ViewGroup

? ???? ?????? ???????? android.widget.FrameLayout

? ???? ?????? ?????? ???????? android.widget.ViewAnimator

? ???? ?????? ?????? ?????? ???????? android.widget.ViewSwitcher

? ???? ?????? ?????? ?????? ?????? ???????? android.widget.ImageSwitcher

?

類概述

????????

(譯者注:ImageSwitcherAndroid中控制圖片展示效果的一個控件,如:幻燈片效果...,頗有感覺啊,做相冊一絕。)

?

公共方法

???????? public void setImageDrawable (Drawable drawable)

???????? 繪制圖片

?

public void setImageResource (int resid)

設(shè)置圖片資源庫

?

public void setImageURI (Uri uri)

設(shè)置圖片地址

????????

補充

???????? 文章鏈接

?????????????????? Android ImageSwitcher

?????????????????? Image Switcher View | Android Developer Tutorial

???????? 示例代碼(本文代碼轉(zhuǎn)載自這里

?????????????????? java文件

public class mainactivity extends Activity implements

? OnItemSelectedListener, ViewFactory {

?private ImageSwitcher is;

?private Gallery gallery;

?

?private Integer[] mThumbIds = { R.drawable.b, R.drawable.c,

?? R.drawable.d, R.drawable.f, R.drawable.g,

?? };

?

?private Integer[] mImageIds = { R.drawable.b, R.drawable.c,

?? R.drawable.d, R.drawable.f, R.drawable.g, };

?

@Override

?protected void onCreate(Bundle savedInstanceState) {

? super.onCreate(savedInstanceState);

? requestWindowFeature(Window.FEATURE_NO_TITLE);

? setContentView(R.layout.main);

?

? is = (ImageSwitcher) findViewById(R.id.switcher);

? is.setFactory(this);

?

? is.setInAnimation(AnimationUtils.loadAnimation(this,

??? android.R.anim.fade_in));

? is.setOutAnimation(AnimationUtils.loadAnimation(this,

??? android.R.anim.fade_out));

?

? gallery = (Gallery) findViewById(R.id.gallery);

?

? gallery.setAdapter(new ImageAdapter(this));

? gallery.setOnItemSelectedListener(this);

?}

?

?@Override

?public View makeView() {

? ImageView i = new ImageView(this);

? i.setBackgroundColor(0xFF000000);

? i.setScaleType(ImageView.ScaleType.FIT_CENTER);

? i.setLayoutParams(new ImageSwitcher.LayoutParams(

??? LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

? return i;

?}

?

?public class ImageAdapter extends BaseAdapter {

? public ImageAdapter(Context c) {

?? mContext = c;

? }

?

? public int getCount() {

?? return mThumbIds.length;

? }

?

? public Object getItem(int position) {

?? return position;

? }

?

? public long getItemId(int position) {

?? return position;

? }

?

? public View getView(int position, View convertView, ViewGroup parent) {

?? ImageView i = new ImageView(mContext);

?

?? i.setImageResource(mThumbIds[position]);

?? i.setAdjustViewBounds(true);

?? i.setLayoutParams(new Gallery.LayoutParams(

???? LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

?? i.setBackgroundResource(R.drawable.e);

?? return i;

? }

?

? private Context mContext;

?

?}

?

?@Override

?public void onItemSelected(AdapterView<?> parent, View view, int position,

?? long id) {

? is.setImageResource(mImageIds[position]);

?

?}

?

?@Override

?public void onNothingSelected(AdapterView<?> parent) {

?}

}

?????????????????? xml文件

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

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

??? android:layout_width="match_parent"

??? android:layout_height="match_parent">

???

??? <ImageSwitcher android:id="@+id/switcher"

??????? android:layout_width="match_parent"

??????? android:layout_height="match_parent"

??????? android:layout_alignParentTop="true"

??????? android:layout_alignParentLeft="true"

??? />

???

??? <Gallery android:id="@+id/gallery"

??????? android:background="#55000000"

??????? android:layout_width="match_parent"

??????? android:layout_height="60dp"

??????? android:layout_alignParentBottom="true"

??????? android:layout_alignParentLeft="true"

???????

??????? android:gravity="center_vertical"

??????? android:spacing="16dp"

??? />

</RelativeLayout>


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