how to change images on imageView after some interval

Question

I have a problem that I want to paste images on ImageView in Android and that images are periodically changed after some interval. Means one by one images shown in ImageView

Answer 1

Try this..It works out well...

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);``
//
//
int []imageArray={R.drawable.img1,R.drawable.img2,R.drawable.img3};


final Handler handler = new Handler();
         Runnable runnable = new Runnable() {
            int i=0;
            public void run() {
                imageView.setImageResource(imageArray[i]);
                i++;
                if(i>imageArray.length-1)
                {
                i=0;    
                }
                handler.postDelayed(this, 50);  //for interval...
            }
        };
        handler.postDelayed(runnable, 2000); //for initial delay..
    }

Answer 2

You can't use things in the UI thread from a background one. So this call:

iv.setImageResource(mThumbIds[i]);

Has to be done in the main thread. In fact you probably don't need a background thread at all to get the effect you're looking for. You can make that just an activity, no need to implement runnable. and then do something like this:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    iv = (ImageView) findViewById(R.id.yourImageViewID);
    int i = 0;
    Runnable r = Runnable(){
        public void run(){
             iv.setImageResource(mThumbIds[i]);
             i++;
             if(i >= mThumbIds.length){
                 i = 0;
             }
             iv.postDelayed(r, 3000); //set to go off again in 3 seconds.
         }
    };
    iv.postDelayed(r,3000); // set first time for 3 seconds

Answer 3

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final int img[] = {R.drawable.flower1, R.drawable.flower2, R.drawable.flower3, R.drawable.flower4};

    layout = (RelativeLayout) findViewById(R.id.activity_main);

    final Handler handler=new Handler();

        Runnable runnable = new Runnable() {
           int i = 0;

            @Override
            public void run() {

                layout.setBackgroundResource(img[i]);
                i++;
                if (i > img.length - 1) {
                i = 0;
                }
                handler.postDelayed(this, 4000);  //for interval 4s..

            }
        };handler.postDelayed(runnable, 100); //for initial delay..

}

Answer 4

Try this it's working

public class vv extends Activity { int b[] = {R.drawable.a, R.drawable.m, R.drawable.b, R.drawable.j, R.drawable.er, R.drawable.chan, R.drawable.vv}; public ImageView i; int z = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    i = (ImageView) findViewById(R.id.image);
    i.setImageResource(b[0]);
    Thread timer = new Thread() {
        public void run() {
            try {
                sleep(2000);

                for (z = 0; z < b.length + 2; z++) {
                    if (z < b.length) {
                        sleep(2000);
                        runOnUiThread(new Runnable() {
                            public void run() {
                                i.setImageResource(b[z]);
                            }
                        });
                    } else {
                        z = 0;

                    }
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                System.out.println("finally");
            }
        }
    };
    timer.start();
}

}

Answer 5

try this code.the images was saved in drawable. please do insert a imageview in xml code. noted that the time interval for the following code is 1 sec.

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
public ImageView iv;
public static Integer[] mThumbIds = {
        R.drawable.pic1,R.drawable.pic2,R.drawable.pic3,R.drawable.pic4};
int i;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    iv = (ImageView) findViewById(R.id.imageView);
    i=0;
    t.start();
}
Thread t = new Thread() {
    @Override
    public void run() {
        try {
            while (!isInterrupted()) {
                Thread.sleep(1000);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        iv.setImageResource(mThumbIds[i]);
                        i++;
                        if(i >= mThumbIds.length){
                            i = 0;
                        }}});}} 
        catch (InterruptedException e) {
        }}};

}