how can we show the image slowly-slowly and change the place of image from bottom to top in android ??? i knw through Transformation but how please give me sample code..
The easiest way is to use the Animation class in Android; it's very easy, sample code can be found in the reference guide here: http://developer.android.com/guide/topics/resources/animation-resource.html#translate-element
Other ways you can do it are with overriding the onDraw call through a SurfaceView or using OpenGL ES with a GLSurfaceView.
may be it helps to you
package Autodrag.test;
import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.Menu; import android.view.MenuItem; import android.widget.ImageView; import android.widget.LinearLayout.LayoutParams;
public class Autodrag extends Activity {
private boolean goRight=false,goDown=false,stop=false;
private ImageView img;
private LayoutParams layoutparms;
private Thread thread;
private Runnable run;
private Handler handler;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
handler=new Handler(){
@Override
public void handleMessage(Message message) {
super.handleMessage(message);
switch (message.what) {
case 0:
Myball(5,5);
break;
default:
break;
}
}
}; run =new Runnable() { @Override public void run() {
while (!stop) {
Message message=new Message();
message.what=0;
handler.sendMessage(message);
try{
Thread.sleep(100);
}catch (Exception e) {
Thread.currentThread().interrupt();
}
}
} };
}
@Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu);
menu.add(0, 0, 0, "Start");
menu.add(0, 1, 0, "Stop");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()) {
case 0:
thread = new Thread(run);
thread.start();
stop=false;
return true;
case 1:
stop=true;
return true;
}
return true;
}
private void Myball(int goX,int goY) {
img=(ImageView)findViewById(R.id.img);
layoutparms = (LayoutParams) img.getLayoutParams();
if (layoutparms.leftMargin < 1){
goRight = true;
}
if (layoutparms.leftMargin > 180){
goRight = false;
}
if (layoutparms.topMargin < 1){
goDown = true;
}
if (layoutparms.topMargin > 300){
goDown = false;
}
if (goRight){
layoutparms.leftMargin += goX;
}else{
layoutparms.leftMargin -= goX;
}
if (goDown){
layoutparms.topMargin += goY;
}else{
layoutparms.topMargin -= goY;
}
img.setLayoutParams(layoutparms);
}
}
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