我有一个图库查看器(遵循 this 教程),我需要在 5 秒后隐藏缩略图,并在用户触摸屏幕时再次显示它们。 基本上,当隐藏缩略图时,只会显示已选择的图像。
我的代码如下:
package com.xs2theworld.sundio;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class GalleryView extends Activity {
Integer[] pics = { R.drawable.antartica1, R.drawable.antartica2, R.drawable.antartica3, R.drawable.antartica4, R.drawable.antartica5, R.drawable.antartica6, R.drawable.antartica7,
R.drawable.antartica8, R.drawable.antartica9, R.drawable.antartica10 };
ImageView imageView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery_view_layout);
Gallery ga = (Gallery) findViewById(R.id.GalleryThumbnails);
ga.setAdapter(new ImageAdapter(this));
imageView = (ImageView) findViewById(R.id.GalleryImage);
// We show the first image when creating the view gallery
imageView.setScaleType(ImageView.ScaleType.CENTER);
imageView.setImageResource(pics[0]);
ga.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
imageView.setScaleType(ImageView.ScaleType.CENTER);
imageView.setImageResource(pics[arg2]);
}
});
}
public class ImageAdapter extends BaseAdapter {
private Context ctx;
int imageBackground;
public ImageAdapter(Context c) {
ctx = c;
TypedArray ta = obtainStyledAttributes(R.styleable.Gallery1);
imageBackground = ta.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 1);
ta.recycle();
}
public int getCount() {
return pics.length;
}
public Object getItem(int arg0) {
return arg0;
}
public long getItemId(int arg0) {
return arg0;
}
public View getView(int arg0, View arg1, ViewGroup arg2) {
ImageView iv = new ImageView(ctx);
iv.setImageResource(pics[arg0]);
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setLayoutParams(new Gallery.LayoutParams(200, 120));
iv.setBackgroundResource(imageBackground);
return iv;
}
}
}
我该怎么做?
提前致谢!
最佳答案
使用 TimerTask 在 5 秒后的预定时间隐藏 Gallery...
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask()
{
public void run()
{
//Do your task here
}
},delay,period);
或者你可以使用这个...
View v = new View(this);
v.postDelayed(new Runnable(){
public void run() {
// TODO Auto-generated method stub
// Hide your Gallery here
}
}, (long) 5000.0);
希望对您有所帮助。
关于Android:倒计时后隐藏图库,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10101857/