Develop Reference

changing image with imageswitcher and onTouch

I want to make android app like the following site.
https://sectional-anatomy.org/ct-abdomen/ or like https://radiopaedia.org/cases/squamous-cell-carcinoma-oral-cavity
There are multiple pictures and these are changing by scrolling.
I have done something like that with imageswitcher and onTouch event with action_down and action_up but it doesn't work because when I remove my finger then it goes to the first image it doesn't stay where I left.
Here is my code:
package com.radiology.radiologymenu.tomografi;
import android.content.SharedPreferences;
import android.graphics.Point;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.Display;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewSwitcher;
import com.radiology.radiologymenu.R;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;
public class ImageChangeActivity extends AppCompatActivity {
private ImageSwitcher imageSwitcher;
private ImageView box;
// Size
private int frameHeight;
private int boxSize;
private int screenHeight;
// Position
private int boxY;
// Speed
private int boxSpeed;
// Score
private int score = 0;
// Initialize Class
private Handler handler = new Handler();
private Timer timer = new Timer();
// Status Check
private boolean action_flg = false;
private boolean start_flg = false;
private String pic;
private ArrayList<Integer> slidePictures;
private static final Integer[] image= {
R.drawable.sagittal_boyun_1, R.drawable.sagittal_boyun_2, R.drawable.sagittal_boyun_3, R.drawable.sagittal_boyun_4,
R.drawable.sagittal_boyun_5, R.drawable.sagittal_boyun_6, R.drawable.sagittal_boyun_7, R.drawable.sagittal_boyun_8,
R.drawable.sagittal_boyun_9, R.drawable.sagittal_boyun_10, R.drawable.sagittal_boyun_11,
R.drawable.sagittal_boyun_12, R.drawable.sagittal_boyun_13, R.drawable.sagittal_boyun_14, R.drawable.sagittal_boyun_15,
R.drawable.sagittal_boyun_16, R.drawable.sagittal_boyun_17, R.drawable.sagittal_boyun_18, R.drawable.sagittal_boyun_19,
R.drawable.sagittal_boyun_20, R.drawable.sagittal_boyun_21, R.drawable.sagittal_boyun_22, R.drawable.sagittal_boyun_23,
R.drawable.sagittal_boyun_24, R.drawable.sagittal_boyun_25, R.drawable.sagittal_boyun_26, R.drawable.sagittal_boyun_27,
R.drawable.sagittal_boyun_28, R.drawable.sagittal_boyun_29, R.drawable.sagittal_boyun_30, R.drawable.sagittal_boyun_31,
R.drawable.sagittal_boyun_32, R.drawable.sagittal_boyun_33, R.drawable.sagittal_boyun_34, R.drawable.sagittal_boyun_35,
R.drawable.sagittal_boyun_36, R.drawable.sagittal_boyun_37, R.drawable.sagittal_boyun_38, R.drawable.sagittal_boyun_39,
R.drawable.sagittal_boyun_40, R.drawable.sagittal_boyun_41, R.drawable.sagittal_boyun_42, R.drawable.sagittal_boyun_43,
R.drawable.sagittal_boyun_44, R.drawable.sagittal_boyun_45 };
int i = 0;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.slide_activity_main);
pic = getIntent().getExtras().getString("pic");
slidePictures = (ArrayList<Integer>) getIntent().getExtras().getSerializable("slidePictures");
getView2(pic,slidePictures);
}
public void getView2(String strings, ArrayList<Integer> slidePictures){
setContentView(R.layout.slide_activity_main);
TextView textView = (TextView) findViewById(R.id.resimText);
textView.setText(strings.toString());
imageSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher);
box = (ImageView) findViewById(R.id.box);
// Get screen size.
WindowManager wm = getWindowManager();
Display disp = wm.getDefaultDisplay();
Point size = new Point();
disp.getSize(size);
screenHeight = size.y;
boxSpeed = Math.round(screenHeight / 60); // 1280 / 60 = 21.333... => 21
imageSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
#Override
public View makeView() {
ImageView imageView = new ImageView(getApplicationContext());
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
FrameLayout.LayoutParams params = new ImageSwitcher.LayoutParams(
FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT);
imageView.setLayoutParams(params);
return imageView;
}
});
imageSwitcher.setImageResource(slidePictures.get(0));
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK))
{
finish();
}
return super.onKeyDown(keyCode, event);
}
public void changePos() {
// Move Box
if (action_flg == true) {
// Touching
boxY -= boxSpeed;
if (i<slidePictures.size()-1){
i++;
imageSwitcher.setImageResource(slidePictures.get(i));
}
} else {
// Releasing
boxY += boxSpeed;
if (i>0){
i--;
imageSwitcher.setImageResource(slidePictures.get(i));
}
}
// Check box position.
if (boxY < 0) boxY = 0;
if (boxY > frameHeight - boxSize) boxY = frameHeight - boxSize;
box.setY(boxY);
}
public boolean onTouchEvent(MotionEvent me) {
if (start_flg == false) {
start_flg = true;
// Why get frame height and box height here?
// Because the UI has not been set on the screen in OnCreate()!!
FrameLayout frame = (FrameLayout) findViewById(R.id.frame);
frameHeight = frame.getHeight();
boxY = (int)box.getY();
// The box is a square.(height and width are the same.)
boxSize = box.getHeight();
timer.schedule(new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
#Override
public void run() {
changePos();
}
});
}
}, 0, 40);
} else {
if (me.getAction() == MotionEvent.ACTION_DOWN) {
action_flg = false;
} else if (me.getAction() == MotionEvent.ACTION_UP) {
action_flg = true;
}
}
return true;
}
}

Can't draw bitmap as overlay

I'm trying to draw bitmap on my activity, showing button as overlay works like a charm, but I can't deal with bitmap. What should I change in my code?
I tried to manually call onDraw by mView.invalidate() in onCreate(), but it wouldn't work.
Thanks in advance!
package com.example.btserver
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.os.IBinder;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
public class HUD extends Service implements OnTouchListener {
Button mButton;
OverlayView mView;
#Override
public IBinder
onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
mView = new OverlayView(this);
mButton = new Button(this);
mButton.setText("Overlay button");
mButton.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
setText();
return true;
}
});
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,//TYPE_SYSTEM_ALERT,//TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, //will cover status bar as well!!!
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.LEFT | Gravity.TOP;
params.y = 100;
params.x = 100;
params.setTitle("Load Average");
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mButton, params);
wm.addView(mView, params);
}
#Override
public void onDestroy() {
super.onDestroy();
if(mButton != null)
{
((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(mButton);
mButton = null;
}
}
#Override
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(this,"Overlay button event", Toast.LENGTH_SHORT).show();
return false;
}
public void setText() {
Toast.makeText(this,"Overlay button event", Toast.LENGTH_SHORT).show();
}
}
class OverlayView extends ViewGroup {
private Paint mLoadPaint;
Bitmap cursor;
public int x = 0,y = 0;
public void Update(int nx, int ny) {
x = nx; y = ny;
}
public OverlayView(Context context) {
super(context);
cursor = BitmapFactory.decodeResource(context.getResources(), R.drawable.cursor);
mLoadPaint = new Paint();
mLoadPaint.setAntiAlias(true);
mLoadPaint.setTextSize(10);
mLoadPaint.setARGB(255, 255, 0, 0);
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawBitmap(cursor, 0,0, mLoadPaint);
}
#Override
protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {
}
#Override
public boolean onTouchEvent(MotionEvent event) {
return true;
}
}

Cannot use this in Builder Android Service

I am trying to use a Bulider from a library that i have imported in my project but for some reason the Builder doesn't accept 'this' as Service context. if anyone can help me out i would truly appreciate it. Thanks
import android.app.Service;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.TextView;
import com.oguzdev.circularfloatingactionmenu.library.FloatingActionMenu;
import com.oguzdev.circularfloatingactionmenu.library.FloatingActionButton;
import com.oguzdev.circularfloatingactionmenu.library.SubActionButton;
import com.example.andrew.reddit2go.R;
import java.util.Calendar;
/**
* Created by Justeen on 2015-02-26.
*/
public class FloatService extends Service {
private WindowManager windowManager;
public TextView textView;
private final IBinder mBinder = new LocalBinder();
private FloatingActionButton rightLowerButton;
private FloatingActionButton topCenterButton;
private FloatingActionMenu rightLowerMenu;
private FloatingActionMenu topCenterMenu;
private boolean serviceWillBeDismissed;
//keep track of an instance to communicate with
private static FloatService floatingInstance;
public class LocalBinder extends Binder {
FloatService getService() {
// Return this instance of LocalService so clients can call public methods
return FloatService.this;
}
}
public FloatService(){
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
#Override
public void onCreate() {
super.onCreate();
serviceWillBeDismissed = false;
floatingInstance = FloatService.this;
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
textView = new TextView(this);
textView.setBackgroundResource(R.drawable.icon);
textView.setTypeface(null, Typeface.BOLD);
textView.setTextColor(Color.GRAY);
textView.setText("0");
Resources res = getResources();
Drawable shape = res.getDrawable(R.drawable.gradient_box);
//textView.findViewById(R.id.textView);
textView.setBackground(shape);
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.LEFT;
params.x = 0;
params.y = 100;
windowManager.addView(textView, params);
try {
textView.setOnTouchListener(new View.OnTouchListener() {
private int initialX;
private int initialY;
private float initialTouchX;
private float initialTouchY;
private final int MAX_CLICK_DURATION = 200;
private long startClickTime;
#Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
initialX = params.x;
initialY = params.y;
initialTouchX = event.getRawX();
initialTouchY = event.getRawY();
startClickTime = Calendar.getInstance().getTimeInMillis();
return true;
case MotionEvent.ACTION_UP:
long clickDuration = Calendar.getInstance().getTimeInMillis() - startClickTime;
//if this is not a move, consider it a click and start the activity to see the posts
if(clickDuration < MAX_CLICK_DURATION) {
Intent activityStart = new Intent(getApplicationContext(), MainActivity.class);
activityStart.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(activityStart);
}
return true;
case MotionEvent.ACTION_MOVE:
params.x = initialX + (int) (event.getRawX() - initialTouchX);
params.y = initialY + (int) (event.getRawY() - initialTouchY);
windowManager.updateViewLayout(textView, params);
return true;
}
return false;
}
});
} catch (Exception e) {
// TODO: handle exception
}
rightLowerButton = new FloatingActionButton.Builder(this)
.setContentView(textView)
.setSystemOverlay(true)
.setLayoutParams(params)
.build();
}
#Override
public int onStartCommand( Intent intent , int flags , int startId ) {
super.onStartCommand(intent, flags, startId);
return START_REDELIVER_INTENT;
}
#Override
public void onDestroy() {
super.onDestroy();
if (textView != null) windowManager.removeView(textView);
floatingInstance = null;
}
//called to update the number on this ChatHead
public void updateUnreadNum(int unreadPosts){
if (null != textView) {
Log.d("Reddit2Go", "number of posts is: " + unreadPosts);
textView.setText(""+unreadPosts);
}
}
//called to update the list of available networks and the number on this ChatHead
public void updateUnreadNum(int unreadPosts, String networkList){
if (null != textView) {
Log.d("Reddit2Go", "number of posts is: " + unreadPosts);
//textView.setTextAlignment(TextView.TEXT_ALIGNMENT_CENTER);
textView.setGravity(Gravity.CENTER);
textView.setText(""+unreadPosts+" Cached\n" + networkList);
}
}
//get a reference to a running instance of this service
public static FloatService getFloatingInstance(){
return floatingInstance;
}
}

Unable to get screen width & height in surface holder in android?

i am new to android and stuck with getting screen size. Here is my code,
package com.piyush.droidz;
import android.app.Activity;
import android.content.Context;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import com.piyush.droidz.model.boy;
public class MainGamePanel extends SurfaceView implements SurfaceHolder.Callback {
private static final String TAG = MainGamePanel.class.getSimpleName();
private GameThread td;
private boy b1;
private int s_width;
private int s_height;
public MainGamePanel(Context context) {
super(context);
getHolder().addCallback(this);
Log.d(TAG, "Screen width=" + s_width);
b1 = new boy(BitmapFactory.decodeResource(getResources(), R.drawable.boy), 50, 50);
td = new GameThread(getHolder(), this);
setFocusable(true);
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
s_width = getHolder().getSurfaceFrame().width();
Log.d(TAG, "Present Screen width=" + s_width);
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
td.setRunning(true);
td.start();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
boolean retry = true;
td.setRunning(false);
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
b1.handleActionDown((int)event.getX(), (int)event.getY());
if (event.getY()>getHeight()-50) {
td.setRunning(false);
((Activity) getContext()).finish();
}
else {
Log.d(TAG, "Coordinates: X="+event.getX()+", Y="+event.getY());
}
}
if (event.getAction()==MotionEvent.ACTION_MOVE) {
if (b1.isTouched()) {
b1.setX((int)event.getX());
b1.setY((int)event.getY());
}
}
if (event.getAction()==MotionEvent.ACTION_UP) {
b1.setTouched(false);
}
return true;
}
#Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.parseColor("#ff0000"));
b1.draw(canvas);
}
}
in the first log-tag it shows 0 where as in the second log-tag it shows exact width of emulator. I have tried initializing the "s_width" with getHolder().getSurfaceFrame().width() even before the constructor but still "s_width" is 0. Also tried WindowManagerand getwindowManager() but it is not recognized by IDE in this class. Here is my Activity class,
package com.piyush.droidz;
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
public class DroidzActivity extends Activity {
MainGamePanel mgp;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mgp = new MainGamePanel(this);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(mgp);
}
}
please help!

Have you tried?
DisplayMetrics metrics = new DisplayMetrics();
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
windowManager.getDefaultDisplay().getMetrics(metrics);
You need to use context for getting the WindowManager. please see the documentation
http://developer.android.com/reference/android/view/WindowManager.html
Preferably the above should be done inside the constructor
public MainGamePanel(Context context) {}
Hope it helps. :)

The View.OnSystemUiVisibilityChangeListener is not work in android Service

I was wondering whether to display SystemUI and Listenering. The window is created in Service
package com.example.testwindow;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import com.android.internal.policy.PolicyManager;
public class WindowManagerService extends Service {
private String TAG ="WindowManagerService";
private Context mContext;
private WindowManager mWindowManager;
private Window mWindow;
#Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "onCreate view");
this.mWindowManager = ((WindowManager) getSystemService("window"));
mContext = this;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
int i = super.onStartCommand(intent, flags, startId);
View editWindow = LayoutInflater.from(mContext).inflate(R.layout.activity_main, null);
mWindow = addWindow(editWindow, 0, 0, LayoutParams.TYPE_PHONE);
int mSystemUiVisibility = mWindow.getDecorView().getSystemUiVisibility();
mWindow.getDecorView().setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener(){
#Override
public void onSystemUiVisibilityChange(int visibility) {
Log.e(TAG,"systemUI onSystemUiVisibilityChange ="+visibility);
}
});
Log.e(TAG, "mSystemUiVisibility ="+mSystemUiVisibility);
WindowManager.LayoutParams layoutParams = mWindow.getAttributes();
layoutParams.x = 0;
layoutParams.y = 0;
layoutParams.width = 500;
layoutParams.height = 600;
layoutParams.gravity = Gravity.TOP | Gravity.LEFT;
layoutParams.hasSystemUiListeners = true;
layoutParams.setTitle("WindowManagerService");
mWindow.setAttributes(layoutParams);
mWindowManager.updateViewLayout(mWindow.getDecorView(), layoutParams);
return i;
}
public WindowManager.LayoutParams createLayoutParams() {
Log.i(TAG , "createLayoutParams");
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams(
LayoutParams.TYPE_SYSTEM_ERROR,
LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
layoutParams.softInputMode = LayoutParams.SOFT_INPUT_ADJUST_PAN;
layoutParams.setTitle(getClass().getName());
return layoutParams;
}
public Window addWindow(View paramView, int width, int height,
int type) {
Log.i(TAG, "addWindow view");
WindowManager.LayoutParams layoutParams = createLayoutParams();
Window localWindow = PolicyManager.makeNewWindow(this.mContext);
if (localWindow != null) {
localWindow.setWindowManager(this.mWindowManager, null, null);
localWindow.requestFeature(Window.FEATURE_NO_TITLE);
localWindow.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
layoutParams.width = width;
layoutParams.height = height;
layoutParams.type = type;
layoutParams.format= PixelFormat.TRANSPARENT;
layoutParams.flags = (LayoutParams.FLAG_NOT_FOCUSABLE | layoutParams.flags);
localWindow.setAttributes(layoutParams);
localWindow.setContentView(paramView);
View localView = localWindow.getDecorView();
if (localView != null) {
localView.setVisibility(View.VISIBLE);
this.mWindowManager.addView(localView, layoutParams);
}
return localWindow;
}
return null;
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onDestroy() {
if (mWindow != null) {
mWindowManager.removeView(mWindow.getDecorView());
mWindow = null;
}
super.onDestroy();
}
}
When I start service,Other App changed to FULLSCREEN or not ,I can't get the log "systemUI onSystemUiVisibilityChange ="
Can someone explain the behaviour? Why can't listener the change?

You can try to add the listener before calling addView.