android的GridView和Gallery

GridView:

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     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="com.example.gridview.MainActivity" >     <GridView          android:id="@+id/gridView1_1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:numColumns="auto_fit"         android:columnWidth="90dp"         android:verticalSpacing="2dp"         android:horizontalSpacing="2dp"         android:stretchMode="columnWidth"         android:gravity="center"         ></GridView> </RelativeLayout>

MainActivity

package com.example.gridview; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; public class MainActivity extends Activity {	private GridView gridView;	@Override	protected void onCreate(Bundle savedInstanceState) {	super.onCreate(savedInstanceState);	setContentView(R.layout.activity_main);	gridView=(GridView) findViewById(R.id.gridView1_1);	MyImageAdapter myImageAdapter=new MyImageAdapter(this);	gridView.setAdapter(myImageAdapter);	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {	// Inflate the menu; this adds items to the action bar if it is present.	getMenuInflater().inflate(R.menu.main, menu);	return true;	}	@Override	public boolean onOptionsItemSelected(MenuItem item) {	// Handle action bar item clicks here. The action bar will	// automatically handle clicks on the Home/Up button, so long	// as you specify a parent activity in AndroidManifest.xml.	int id = item.getItemId();	if (id == R.id.action_settings) {	return true;	}	return super.onOptionsItemSelected(item);	}	static class MyImageAdapter extends BaseAdapter{	private Context ct;	//要显示的图片资源	private int [] p_w_picpaths={	R.drawable.th_seismometer_1,	R.drawable.th_skippylite,	R.drawable.th_sms_hey_blue,	R.drawable.th_ssh,	R.drawable.th_things1,	R.drawable.th_thisday,	R.drawable.th_seismometer_1,	R.drawable.th_skippylite,	R.drawable.th_sms_hey_blue,	R.drawable.th_ssh,	R.drawable.th_things1,	R.drawable.th_thisday};	MyImageAdapter(Context ct){	this.ct=ct;	}	@Override	public int getCount() {	// TODO Auto-generated method stub	return p_w_picpaths.length;	}	@Override	public Object getItem(int position) {	// TODO Auto-generated method stub	return position;	}	@Override	public long getItemId(int position) {	// TODO Auto-generated method stub	return position;	}	@Override	public View getView(int position, View convertView, ViewGroup parent) {	// TODO Auto-generated method stub	ImageView p_w_picpathView;	if(convertView==null){	p_w_picpathView=new ImageView(ct);	//设置图片的宽和高	p_w_picpathView.setLayoutParams(new GridView.LayoutParams(85, 85));	//设置拉伸或截取方式	p_w_picpathView.setScaleType(ImageView.ScaleType.CENTER_CROP);	p_w_picpathView.setPadding(8, 8, 8, 8);	}else{	p_w_picpathView=(ImageView)convertView;	}	p_w_picpathView.setImageResource(p_w_picpaths[position]);	return p_w_picpathView;	}	} }

Gallery:

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     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="com.example.gallery.MainActivity" >         <Gallery         android:id="@+id/gallery1_1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_marginLeft="60dp"         android:layout_marginTop="60dp"        >              </Gallery> </RelativeLayout>

MainActivity

package com.example.gallery; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView; public class MainActivity extends Activity {	private Gallery gallery;	@Override	protected void onCreate(Bundle savedInstanceState) {	super.onCreate(savedInstanceState);	setContentView(R.layout.activity_main);	gallery=(Gallery) findViewById(R.id.gallery1_1);	MyGalleryAdapter myGalleryAdapter=new MyGalleryAdapter();	gallery.setAdapter(myGalleryAdapter);	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {	// Inflate the menu; this adds items to the action bar if it is present.	getMenuInflater().inflate(R.menu.main, menu);	return true;	}	@Override	public boolean onOptionsItemSelected(MenuItem item) {	// Handle action bar item clicks here. The action bar will	// automatically handle clicks on the Home/Up button, so long	// as you specify a parent activity in AndroidManifest.xml.	int id = item.getItemId();	if (id == R.id.action_settings) {	return true;	}	return super.onOptionsItemSelected(item);	}	class MyGalleryAdapter extends BaseAdapter{	private int [] p_w_picpaths={	R.drawable.th_seismometer_1,	R.drawable.th_skippylite,	R.drawable.th_sms_hey_blue,	R.drawable.th_ssh,	R.drawable.th_things1,	R.drawable.th_thisday,	R.drawable.th_seismometer_1,	R.drawable.th_skippylite,	R.drawable.th_sms_hey_blue,	R.drawable.th_ssh,	R.drawable.th_things1,	R.drawable.th_thisday};	@Override	public int getCount() {	// TODO Auto-generated method stub	return p_w_picpaths.length;	}	@Override	public Object getItem(int position) {	// TODO Auto-generated method stub	return position;	}	@Override	public long getItemId(int position) {	// TODO Auto-generated method stub	return position;	}	@Override	public View getView(int position, View convertView, ViewGroup parent) {	// TODO Auto-generated method stub	ImageView p_w_picpathView;	if(convertView==null){	p_w_picpathView=new ImageView(MainActivity.this);	}else{	p_w_picpathView=(ImageView)convertView;	}	p_w_picpathView.setImageResource(p_w_picpaths[position]);	return p_w_picpathView;	}	} }