Android Imageview Switching Problem

i have imageview and i have to display different image in that with time interval, but when i change the ImageResource the last image is displayed public void onCreate(Bundle sav

Solution 1:

Perhaps this thread is what you are looking for:

• how to change images with timer

Solution 2:

Whenever you want to update the user interface without performing any action or event, handlers should be used.

This is the sample code

Main.java

package com.balaji.handler;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ImageView;
import android.widget.TextView;
publicclassMainextendsActivity  { 

    private ImageView txtStatus;
    int i=0;
    int imgid[]={R.drawable.icon,R.drawable.back,R.drawable.slider,R.drawable.forward};
    privateRefreshHandlermRedrawHandler=newRefreshHandler();

    classRefreshHandlerextendsHandler {

        @OverridepublicvoidhandleMessage(Message msg) {
            Main.this.updateUI();
        }

        publicvoidsleep(long delayMillis) {
            this.removeMessages(0);
            sendMessageDelayed(obtainMessage(0), delayMillis);
        }

    };

    privatevoidupdateUI(){
        //int currentInt = Integer.parseInt((String) txtStatus.getText()) + 10;if(i<imgid.length){
        mRedrawHandler.sleep(1000);
        txtStatus.setBackgroundResource(imgid[i]);
        i++;
    }
}

@OverridepublicvoidonCreate(Bundle icicle) { 
    super.onCreate(icicle); 
    setContentView(R.layout.main);
    this.txtStatus = (ImageView)this.findViewById(R.id.txtStatus);
    updateUI();
}   
}

---

main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><ImageViewandroid:id="@+id/txtStatus"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_centerHorizontal="true"></ImageView></RelativeLayout>