android GridView,Gallery，ListView 原创【安卓进化六】
android GridView,Gallery，ListView 原创【安卓进化六】
一、今天总结了下几种常用的控件GridView,Gallery,ListView，希望对大家有帮助，基本是改的例子程序，先看效果图：
主页面效果： 点击GridView后出现的界面：
点击Gallery后出现的界面： 点击ListView后出现的界面：
二、先把xml文件的代码贴出来：
1、main.xml文件中的代码
<?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">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="大明原创"
android:gravity="center_horizontal"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"/>
<Button
android:id="@+id/gridview_button"
android:layout_width="fill_parent"
android:layout_height="60dip"
android:text="GridView"/>
<Button
android:id="@+id/gallery_button"
android:layout_width="fill_parent"
android:layout_height="60dip"
android:text="Gallery"></Button>
<Button
android:id="@+id/listview_button"
android:layout_width="fill_parent"
android:layout_height="60dip"
android:text="ListView"></Button>
</LinearLayout>
2、gallery.xml中的代码：
<pre class="html" name="code"><?xml version="1.0" encoding="utf-8"?>
<Gallery xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/gallery"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
3、gridview.xml中的代码：
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/myGrid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:columnWidth="60dp"
android:stretchMode="columnWidth"
android:gravity="center"
/>
4、listview.xml中的代码：
<?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">
<TextView android:text="用户列表" android:gravity="center"
android:layout_height="wrap_content"
android:layout_width="fill_parent" android:background="#DAA520"
android:textColor="#000000">
</TextView>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView android:text="姓名"
android:gravity="center" android:layout_width="150px"
android:layout_height="wrap_content" android:textStyle="bold"
android:background="#7CFC00">
</TextView>
<TextView android:text="年龄"
android:layout_width="170px" android:gravity="center"
android:layout_height="wrap_content" android:textStyle="bold"
android:background="#F0E68C">
</TextView>
</LinearLayout>
<ListView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/users">
</ListView>
</LinearLayout>
5、user.xml中的代码：
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
android:layout_width="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
>
<TableRow >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dip"
android:id="@+id/img">
</ImageView>
<TextView
android:layout_height="wrap_content"
android:layout_width="150px"
android:gravity="center_vertical"
android:layout_gravity="center_vertical"
android:id="@+id/name">
</TextView>
<TextView
android:layout_height="wrap_content"
android:layout_width="170px"
android:gravity="center_vertical"
android:layout_gravity="center_vertical"
android:id="@+id/age">
</TextView>
</TableRow>
</TableLayout>
三，java类中的代码：
1、MainActivity类中的代码：
package com.cn.android;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//初始化button按钮
initGridViewGalleryListViewButton();
}
//实现button按钮的方法
private void initGridViewGalleryListViewButton() {
// TODO Auto-generated method stub
//跳转到GridView的Actvity中
Button GridViewButton = (Button)findViewById(R.id.gridview_button);
GridViewButton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i_gridview = new Intent();
i_gridview.setClass(MainActivity.this, GridViewActivity.class);
startActivity(i_gridview);
}
});
//跳转到Gallery的Activity中
Button GalleryButton = (Button)findViewById(R.id.gallery_button);
GalleryButton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i_gallery = new Intent();
i_gallery.setClass(MainActivity.this, GalleryActivity.class);
startActivity(i_gallery);
}
});
//跳转到ListView的Activity中
Button ListViewButton = (Button)findViewById(R.id.listview_button);
ListViewButton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i_listview = new Intent();
i_listview.setClass(MainActivity.this,ListViewActivity.class);
startActivity(i_listview);
}
});
}
}
2、GridViewActivity中的代码：
package com.cn.android;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class GridViewActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.gridview);
GridView gridview = (GridView) findViewById(R.id.myGrid);
gridview.setAdapter(new ImageAdapter(this));
}
//定义ImageAdapter类
public class ImageAdapter extends BaseAdapter {
private Context mContext;
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 imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(50, 50));
imageView.setAdjustViewBounds(false);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setPadding(10, 10, 10, 10);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
private Integer[] mThumbIds = {
R.drawable.sample_thumb_0, R.drawable.sample_thumb_1,
R.drawable.sample_thumb_2, R.drawable.sample_thumb_3,
R.drawable.sample_thumb_4, R.drawable.sample_thumb_5,
R.drawable.sample_thumb_6, R.drawable.sample_thumb_7,
R.drawable.sample_thumb_0, R.drawable.sample_thumb_1,
R.drawable.sample_thumb_2, R.drawable.sample_thumb_3,
R.drawable.sample_thumb_4, R.drawable.sample_thumb_5,
R.drawable.sample_thumb_6, R.drawable.sample_thumb_7,
R.drawable.sample_thumb_0, R.drawable.sample_thumb_1,
R.drawable.sample_thumb_2, R.drawable.sample_thumb_3,
R.drawable.sample_thumb_4, R.drawable.sample_thumb_5,
R.drawable.sample_thumb_6, R.drawable.sample_thumb_7,
};
}
}
3、GalleryActivity中的代码：
package com.cn.android;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
public class GalleryActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery);
// Reference the Gallery view
Gallery gallery = (Gallery) findViewById(R.id.gallery);
// Set the adapter to our custom adapter (below)
gallery.setAdapter(new ImageAdapter(this));
// Set a item click listener, and just Toast the clicked position
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
Toast.makeText(GalleryActivity.this, "" + position, Toast.LENGTH_SHORT).show();
}
});
// We also want to show context menu for longpressed items in the gallery
registerForContextMenu(gallery);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
menu.add(R.string.gallery_text);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
Toast.makeText(this, "Longpress: " + info.position, Toast.LENGTH_SHORT).show();
return true;
}
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
// See res/values/attrs.xml for the <declare-styleable> that defines
// Gallery1.
TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
mGalleryItemBackground = a.getResourceId(
R.styleable.Gallery1_android_galleryItemBackground, 0);
a.recycle();
}
public int getCount() {
return mImageIds.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(mImageIds[position]);
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new Gallery.LayoutParams(136, 88));
// The preferred Gallery item background
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
private Integer[] mImageIds = {
R.drawable.gallery_photo_1,
R.drawable.gallery_photo_2,
R.drawable.gallery_photo_3,
R.drawable.gallery_photo_4,
R.drawable.gallery_photo_5,
R.drawable.gallery_photo_6,
R.drawable.gallery_photo_7,
R.drawable.gallery_photo_8
};
}
}
4、ListViewActivity中的代码
package com.cn.android;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class ListViewActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
ArrayList<HashMap<String, Object>> users = new ArrayList<HashMap<String, Object>>();
for (int i = 0; i < 10; i++) {
HashMap<String, Object> user = new HashMap<String, Object>();
user.put("img", R.drawable.icon);
user.put("username", "姓名(" + i+")");
user.put("age", (20 + i) + "");
users.add(user);
}
SimpleAdapter saImageItems = new SimpleAdapter(this,
users,// 数据来源
R.layout.user,//每一个user xml 相当ListView的一个组件
new String[] { "img", "username", "age" },
// 分别对应view 的id
new int[] { R.id.img, R.id.name, R.id.age });
// 获取listview
((ListView) findViewById(R.id.users)).setAdapter(saImageItems);
}
}
四、在values的文件夹下面建一个attrs.xml文件：gallery设置样式的功能
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- These are the attributes that we want to retrieve from the theme
in view/Gallery1.java -->
<declare-styleable name="Gallery1">
<attr name="android:galleryItemBackground" />
</declare-styleable>
/resources>
五、Manifest.xml文件中的代码：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.cn.android"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".GridViewActivity" android:label="GridViewActivity"></activity>
<activity android:name=".GalleryActivity" android:label="GalleryActivity"></activity>
<activity android:name=".ListViewActivity" android:label="ListViewActivity"></activity>
</application>
</manifest>
六、特别说明：程序中有的图片我没有添加，大家找一些图片特换掉就行了，大小不合适的就调一下布局，设置一些参数就可以了！希望大家谅解：
drawable目录下的图片：
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