[英]slideshow of images continously in android
我想在Android中使用imageview以5秒的間隔連續顯示圖像。
我嘗試了以下代碼
String[] Img_data = { MediaStore.Images.Media.DATA };
Cursor imgcursor = this.managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, Img_data,null,null, null);
if(imgcursor!=null && img_cursor.getCount()>0){
while(!imgcursor.isAfterLast()){
imgcursor.moveToFirst();
String filepath = cursor.getString(columnIndex);
imageview.setImageUri(Uri.parse(filepath);
imgcursor.moveToNext();
}
}
請給我相應的答案。
為此使用處理程序:
Handler mHandler = new Handler();
mHandler.postDelayed(mRunnable, 2000);
final Runnable mRunnable = new Runnable()
{
@Override
public void run()
{
Utility.getInstance(getActivity()).displayImage(mImageUrlsTop.get(mCounterTop++), mImageViewTop, mProgressBarTop);
mHandler.postDelayed(mRunnable, 2000);
}
};
在這里,displayImage是我的功能,用於顯示提供的URL和Imageview的圖像,而mImageUrlsTop是ImageUrl的數組列表。
試試這個代碼
private Runnable updateImageThread = new Runnable() {
public void run() {
timeInMilliseconds = SystemClock.uptimeMillis() - startTime1;
updatedTime = timeSwapBuff + timeInMilliseconds;
int secs = (int) (updatedTime / 1000);
int mins = secs / 60;
secs = secs % 60;
int milliseconds = (int) (updatedTime % 5000);
// set images to imageview here as per your need
customHandler.postDelayed(this, 0);
}
};
// call this thread like this
private Handler customHandler = new Handler();
long timeInMilliseconds = 0L;
long updatedTime = 0L;
customHandler.postDelayed(updateImageThread, 0);
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