android 点击计时器,android用计时器替换点击

我找到了这个示例,但我有一个小问题：如何将单击鼠标移到计时器或延迟器上,以便在其中显示第一张图像并等待几秒钟然后移至下一张图像？

http://mobile.dzone.com/news/displaying-images-sd-card?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+javalobby%2Ffrontpage+%28Javalobby+%2F+Java+Zone%29

谢谢.

package blog.android.sdcard;

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.provider.MediaStore;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.BaseAdapter;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.AdapterView.OnItemClickListener;

/**

* Displays images from an SD card.

*/

public class SDCardImagesActivity extends Activity {

/**

* Cursor used to access the results from querying for images on the SD

* card.

*/

private Cursor cursor;

/*

* Column index for the Thumbnails Image IDs.

*/

private int columnIndex;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.sdcard);

// Set up an array of the Thumbnail Image ID column we want

String[] projection = { MediaStore.Images.Thumbnails._ID };

// Create the cursor pointing to the SDCard

cursor = managedQuery(

MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, projection, // Which

// columns

// to

// return

null, // Return all rows

null, MediaStore.Images.Thumbnails.IMAGE_ID);

// Get the column index of the Thumbnails Image ID

columnIndex = cursor

.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);

GridView sdcardImages = (GridView) findViewById(R.id.sdcard);

sdcardImages.setAdapter(new ImageAdapter(this));

// Set up a click listener

sdcardImages.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView parent, View v, int position,

long id) {

// Get the data location of the image

String[] projection = { MediaStore.Images.Media.DATA };

cursor = managedQuery(

MediaStore.Images.Media.EXTERNAL_CONTENT_URI,

projection, // Which columns to return

null, // Return all rows

null, null);

columnIndex = cursor

.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

cursor.moveToPosition(position);

// Get image filename

String imagePath = cursor.getString(columnIndex);

// Use this path to do further processing, i.e. full screen

// display

}

});

}

/**

* Adapter for our image files.

*/

private class ImageAdapter extends BaseAdapter {

private Context context;

public ImageAdapter(Context localContext) {

context = localContext;

}

public int getCount() {

return cursor.getCount();

}

public Object getItem(int position) {

return position;

}

public long getItemId(int position) {

return position;

}

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

ImageView picturesView;

if (convertView == null) {

picturesView = new ImageView(context);

// Move cursor to current position

cursor.moveToPosition(position);

// Get the current value for the requested column

int imageID = cursor.getInt(columnIndex);

// Set the content of the image based on the provided URI

picturesView.setImageURI(Uri.withAppendedPath(

MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, ""

+ imageID));

picturesView.setScaleType(ImageView.ScaleType.FIT_CENTER);

picturesView.setPadding(8, 8, 8, 8);

picturesView

.setLayoutParams(new GridView.LayoutParams(100, 100));

} else {

picturesView = (ImageView) convertView;

}

return picturesView;

}

}

}