Android GridView ImageSwitcher

GridView

android:columnWidth         setColumnWidth(int)设置列的宽度

android:gravity setGravity(int)设置对齐方式

android:horizontalSpacing setHorizontalSpacing(int)设置各元素之间的水平间距

android:numColumns setNumColumns(int)设置列数

android:stretchMode setStretchMode(int)设置拉伸模式

android:verticalSpacing  setVerticalSpacing(int)设置各元素之间的垂直间距

andorid:stretchMode属性值：

NO_STRETCH:不拉伸

STRETCH_SPACING:仅拉伸元素之间的间距

STRETCH_SPACING_UNIFORM:表格元素本身，元素之间的间距一起拉伸

STRETCH_COLUMN_WIDTH:仅拉伸表格元素本身

package shortcut.song.com.myapplication;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.FrameLayout;import android.widget.GridView;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.SimpleAdapter;import android.widget.ViewSwitcher;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class GridViewActivity extends AppCompatActivity {    GridView mGridView;    ImageSwitcher mImageSwitcher;    private int images[] = {            R.drawable.play,R.drawable.alert_dialog_icon, R.drawable.img1,            R.drawable.img2, R.drawable.img3, R.drawable.sun,            R.drawable.play, R.drawable.img1, R.drawable.sun,        };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_grid_view);        mGridView = (GridView)findViewById(R.id.gridview1);        mImageSwitcher = (ImageSwitcher)findViewById(R.id.imagesswitcher1);        mImageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));        mImageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));        mImageSwitcher.setFactory(new ViewSwitcher.ViewFactory() {            @Override            public View makeView() {                ImageView imageView = new ImageView(GridViewActivity.this);                imageView.setBackgroundColor(0xff000000);                imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);                imageView.setLayoutParams(new ImageSwitcher.LayoutParams(ImageSwitcher.LayoutParams.WRAP_CONTENT,                        ImageSwitcher.LayoutParams.WRAP_CONTENT));                return imageView;            }        });        List<Map<String, Object>> mLists = new ArrayList<Map<String, Object>>();        for (int i=0; i < images.length; i++ ) {            Map<String, Object> mList = new HashMap<String, Object>();            mList.put("image", images[i]);            mLists.add(mList);        }        SimpleAdapter simpleAdapter = new SimpleAdapter(this,                mLists,                R.layout.cell,                new String[] {"image"},                new int[] {R.id.cell_img});        mGridView.setAdapter(simpleAdapter);        mGridView.setChoiceMode(GridView.CHOICE_MODE_SINGLE);        mGridView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                mImageSwitcher.setImageResource(images[position % images.length]);            }            @Override            public void onNothingSelected(AdapterView<?> parent) {            }        });        mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                mImageSwitcher.setImageResource(images[ position % images.length]);            }        });    }}

//cell.xml

<?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">    <ImageView        android:id="@+id/cell_img"        android:layout_width="50dp"        android:layout_height="50dp" /></LinearLayout>

//mxl 布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_grid_view"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="shortcut.song.com.myapplication.GridViewActivity">    <GridView        android:id="@+id/gridview1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:numColumns="3"        android:choiceMode="singleChoice"        android:horizontalSpacing="5dp"        android:verticalSpacing="5dp"        android:gravity="center"        />    <ImageSwitcher        android:id="@+id/imagesswitcher1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        /></RelativeLayout>