Develop Reference

Why can't function "if (counter >10)" work?

I'm trying to get an AlertDialog to appear if my counter is above 10.
I have tried using the TextView variable peopleCount in the if statement but it does not work too. I know using TextView will not work but I need to know if there is a workaround.
private TextView peopleCount;
private ImageView plusOne;
private ImageView minusOne;
private ImageView reset;
private int counter;
private View.OnClickListener clickListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.ivPlusOne :
plusCounter();
break;
case R.id.ivMinusOne :
minusCounter();
break;
case R.id.ivReset :
initCounter();
break;
}
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_people);
peopleCount = (TextView)findViewById(R.id.tvPeopleCount);
plusOne = (ImageView)findViewById(R.id.ivPlusOne);
plusOne.setOnClickListener(clickListener);
minusOne = (ImageView)findViewById(R.id.ivMinusOne);
minusOne.setOnClickListener(clickListener);
reset = (ImageView)findViewById(R.id.ivReset);
reset.setOnClickListener(clickListener);
initCounter();
if( counter > 10) {
AlertDialog.Builder peopleAlert = new AlertDialog.Builder(PeopleActivity.this);
peopleAlert.setCancelable(false);
peopleAlert.setTitle("People Count High");
peopleAlert.setMessage("Please check and replenish inventory");
peopleAlert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogPeople, int which) {
dialogPeople.cancel();
}
});
peopleAlert.show();
}
private void initCounter(){
counter = 0;
peopleCount.setText(counter + "");
}
private void plusCounter(){
counter++;
peopleCount.setText(counter + "");
}
private void minusCounter(){
counter--;
peopleCount.setText(counter + "");
}
I expected the AlertDialog to appear when counter reached 11 but nothing happens.

OnCreate only runs once, You need to move the if statement to a function and call it from your plusCounter() and minusCounter() functions.

How a button click can call another activity?

So I am trying to create an android app to show some simple battery information. And now I want to take that info and plot a graph inside the app. I have the following codes:
public class MainActivity extends ActionBarActivity {
private TextView level,voltage, status1,temp,health1,tech,sour,amp;
Thread myThread;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
level=(TextView)findViewById(R.id.level);
voltage=(TextView)findViewById(R.id.volt);
status1=(TextView)findViewById(R.id.stat);
temp=(TextView)findViewById(R.id.temp);
health1=(TextView)findViewById(R.id.healt);
tech=(TextView)findViewById(R.id.tech);
sour=(TextView)findViewById(R.id.source);
Button b = (Button) findViewById(R.id.ex);
Button g = (Button) findViewById(R.id.graphButton);
amp=(TextView)findViewById(R.id.current);
b.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
}
});
g.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
//how can i jump to DynamicGraphActivity
}
});
this.registerReceiver(this.myBatteryReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
private BroadcastReceiver myBatteryReceiver
= new BroadcastReceiver(){
#SuppressLint("InlinedApi")
#Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
if (arg1.getAction().equals(Intent.ACTION_BATTERY_CHANGED)){
int lv = arg1.getIntExtra("level", 0);
level.setText("Level: "
+ String.valueOf(lv) + "%");
voltage.setText("Voltage: "
+ String.valueOf((float)arg1.getIntExtra("voltage", 0)/1000) + "V");
temp.setText("Temperature: "
+ String.valueOf((float)arg1.getIntExtra("temperature", 0)/10) + "c");
tech.setText("Technology: " + arg1.getStringExtra("technology"));
int status = arg1.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN);
String strStatus;
if (status == BatteryManager.BATTERY_STATUS_CHARGING){
strStatus = "Charging";
} else if (status == BatteryManager.BATTERY_STATUS_DISCHARGING){
strStatus = "Dis-charging";
} else if (status == BatteryManager.BATTERY_STATUS_NOT_CHARGING){
strStatus = "Not charging";
} else if (status == BatteryManager.BATTERY_STATUS_FULL){
strStatus = "Full";
} else {
strStatus = "Unknown";
}
status1.setText("Status: " + strStatus);
//int source=arg1.getIntExtra("source", BatteryManager.BATTERY_STATUS_UNKNOWN);
if(Build.VERSION.SDK_INT >= 21){
BatteryManager battery = (BatteryManager)getSystemService(Context.BATTERY_SERVICE);
int current=battery.getIntProperty(BatteryManager.BATTERY_PROPERTY_CURRENT_NOW);
int currentAvg=battery.getIntProperty(BatteryManager.BATTERY_PROPERTY_CURRENT_AVERAGE);
int energy=battery.getIntProperty(BatteryManager.BATTERY_PROPERTY_ENERGY_COUNTER);
int capacity=battery.getIntProperty(BatteryManager.BATTERY_PROPERTY_CHARGE_COUNTER);
int bCapacity=battery.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
String string1 = "Current: "+ current*1000+" uA"+"\n";
string1+="Average Current: "+currentAvg+" uA"+"\n";
string1+="Remaining energy: "+energy+" nWh"+"\n";
string1+="Capacity: "+capacity+" uAh"+"\n\n";
amp.setText(string1);
}
int health = arg1.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN);
String strHealth;
if (health == BatteryManager.BATTERY_HEALTH_GOOD){
strHealth = "Good";
} else if (health == BatteryManager.BATTERY_HEALTH_OVERHEAT){
strHealth = "Over Heat";
} else if (health == BatteryManager.BATTERY_HEALTH_DEAD){
strHealth = "Dead";
} else if (health == BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE){
strHealth = "Over Voltage";
} else if (health == BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE){
strHealth = "Unspecified Failure";
} else{
strHealth = "Unknown";
}
health1.setText("Health: " + strHealth);
}
}
};
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
2nd Activity or DynamicGraphActivity:
public class DynamicGraphActivity extends Activity {
private static GraphicalView view;
private LineGraph line = new LineGraph();
private static Thread thread;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
thread = new Thread() {
public void run()
{
for (int i = 0; i < 15; i++)
{
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Point p = MockData.getDataFromReceiver(i); // We got new data!
line.addNewPoints(p); // Add it to our graph
view.repaint();
}
}
};
thread.start();
}
#Override
protected void onStart() {
super.onStart();
view = line.getView(this);
setContentView(view);
}
}
import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.chart.PointStyle;
import org.achartengine.model.TimeSeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;
import android.content.Context;
import android.graphics.Color;
public class LineGraph {
private GraphicalView view;
private TimeSeries dataset = new TimeSeries("Rain Fall");
private XYMultipleSeriesDataset mDataset = new XYMultipleSeriesDataset();
private XYSeriesRenderer renderer = new XYSeriesRenderer(); // This will be used to customize line 1
private XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer(); // Holds a collection of XYSeriesRenderer and customizes the graph
public LineGraph()
{
// Add single dataset to multiple dataset
mDataset.addSeries(dataset);
// Customization time for line 1!
renderer.setColor(Color.WHITE);
renderer.setPointStyle(PointStyle.SQUARE);
renderer.setFillPoints(true);
// Enable Zoom
mRenderer.setZoomButtonsVisible(true);
mRenderer.setXTitle("Day #");
mRenderer.setYTitle("CM in Rainfall");
// Add single renderer to multiple renderer
mRenderer.addSeriesRenderer(renderer);
}
public GraphicalView getView(Context context)
{
view = ChartFactory.getLineChartView(context, mDataset, mRenderer);
return view;
}
public void addNewPoints(Point p)
{
dataset.add(p.getX(), p.getY());
}
}
import java.util.Random;
public class MockData {
// x is the day number, 0, 1, 2, 3
public static Point getDataFromReceiver(int x)
{
return new Point(x, generateRandomData());
}
private static int generateRandomData()
{
Random random = new Random();
return random.nextInt(40);
}
}
public class Point {
private int x;
private int y;
public Point( int x, int y)
{
this.x = x;
this.y = y;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
}
Now inside the button g, I want to call DynamicGraphActivity class so that it calls the class and plots a graph using some random values. but its not working. When i click on the button, it doesnt do anything. How can I fix this?
And my another question is, how can I plot the battery info such as voltage, charge or discharge over time using these codes/
Any help would be greatly appreciated.
Thank you

Well there is a difference between any class or an activity.
Activity have a visual layout maps to it.Check this link for more info.
Inside your g button click listener add this code.
g.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, DynamicGraphActivity.class);
startActivity(intent);
}
});
Also you need to add the other activity in the AndroidManifest.xml as well under application tag.(You already have activity tag inside application tag if you create a new app.But you don't need any intent filters for newer activity)
<activity
android:name=".DynamicGraphActivity"
/>
I noticed one more thing you are using same layout(main.xml) for both activities.
Create another layout in layouts folder and map it to the DynamicGraphActivity.
Lets say you create second.xml.
So your DynamicGraphActivity oncreate() have:
setContentView(R.layout.second);

Intent 2ndActivity = new Intent(this, blabla.class);
startActivity(2ndActivity);
For the button and for the extra value you can use Bundle,Parcel or just use putExtra.
And for the battery info, Read from google developer

In your button click put this code
Intent intent = new Intent(MainActivity.this, DynamicGraphActivity.class);
startActivity(intent);
and define this activity in your AndroidManifest.xml
<activity
android:name=".DynamicGraphActivity"
android:theme="#android:style/Theme.Translucent.NoTitleBar" />
and for Battery information you can refer this links...
http://developer.android.com/reference/android/os/BatteryManager.html
http://mobiledevtuts.com/android/android-sdk-get-device-battery-information/
Get battery level and state in Android

Android: Adding functionality that activty changes when game is complete

I wish to add the following functionality to my game:
-When the game is complete (no more cards are visible on screen) then move to a new activity
I am aware how to move to another activty using intents but I am not sure how to implement the functionality in this case.
I.e. what variable/info can I use to ensure the game is complete when I move before moving to the next activity?
For reference, The game is based off this open source game Images of the game are shown here to give an idea.
Current code:
public class Manager extends Activity {
private static int ROW_COUNT = -1;
private static int COL_COUNT = -1;
private Context context;
private Drawable backImage;
private int [] [] cards;
private List<Drawable> images;
private Card firstCard;
private Card seconedCard;
private ButtonListener buttonListener;
private static Object lock = new Object();
int turns;
private TableLayout mainTable;
private UpdateCardsHandler handler;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
handler = new UpdateCardsHandler();
loadImages();
setContentView(R.layout.main);
TextView url = ((TextView)findViewById(R.id.myWebSite));
Linkify.addLinks(url, Linkify.WEB_URLS);
backImage = getResources().getDrawable(R.drawable.icon);
/*
((Button)findViewById(R.id.ButtonNew)).setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
newGame();
}
});*/
buttonListener = new ButtonListener();
mainTable = (TableLayout)findViewById(R.id.TableLayout03);
context = mainTable.getContext();
Spinner s = (Spinner) findViewById(R.id.Spinner01);
ArrayAdapter adapter = ArrayAdapter.createFromResource(
this, R.array.type, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s.setAdapter(adapter);
s.setOnItemSelectedListener(new OnItemSelectedListener(){
#Override
public void onItemSelected(
android.widget.AdapterView<?> arg0,
View arg1, int pos, long arg3){
((Spinner) findViewById(R.id.Spinner01)).setSelection(0);
int x,y;
switch (pos) {
case 1:
x=4;y=4;
break;
case 2:
x=4;y=5;
break;
case 3:
x=4;y=6;
break;
case 4:
x=5;y=6;
break;
case 5:
x=6;y=6;
break;
default:
return;
}
newGame(x,y);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
private void newGame(int c, int r) {
ROW_COUNT = r;
COL_COUNT = c;
cards = new int [COL_COUNT] [ROW_COUNT];
mainTable.removeView(findViewById(R.id.TableRow01));
mainTable.removeView(findViewById(R.id.TableRow02));
TableRow tr = ((TableRow)findViewById(R.id.TableRow03));
tr.removeAllViews();
mainTable = new TableLayout(context);
tr.addView(mainTable);
for (int y = 0; y < ROW_COUNT; y++) {
mainTable.addView(createRow(y));
}
firstCard=null;
loadCards();
turns=0;
((TextView)findViewById(R.id.tv1)).setText("Tries: "+turns);
}
private void loadImages() {
images = new ArrayList<Drawable>();
images.add(getResources().getDrawable(R.drawable.card1));
images.add(getResources().getDrawable(R.drawable.card2));
images.add(getResources().getDrawable(R.drawable.card3));
images.add(getResources().getDrawable(R.drawable.card4));
images.add(getResources().getDrawable(R.drawable.card5));
images.add(getResources().getDrawable(R.drawable.card6));
images.add(getResources().getDrawable(R.drawable.card7));
images.add(getResources().getDrawable(R.drawable.card8));
images.add(getResources().getDrawable(R.drawable.card9));
images.add(getResources().getDrawable(R.drawable.card10));
images.add(getResources().getDrawable(R.drawable.card11));
images.add(getResources().getDrawable(R.drawable.card12));
images.add(getResources().getDrawable(R.drawable.card13));
images.add(getResources().getDrawable(R.drawable.card14));
images.add(getResources().getDrawable(R.drawable.card15));
images.add(getResources().getDrawable(R.drawable.card16));
images.add(getResources().getDrawable(R.drawable.card17));
images.add(getResources().getDrawable(R.drawable.card18));
images.add(getResources().getDrawable(R.drawable.card19));
images.add(getResources().getDrawable(R.drawable.card20));
images.add(getResources().getDrawable(R.drawable.card21));
}
private void loadCards(){
try{
int size = ROW_COUNT*COL_COUNT;
Log.i("loadCards()","size=" + size);
ArrayList<Integer> list = new ArrayList<Integer>();
for(int i=0;i<size;i++){
list.add(new Integer(i));
}
Random r = new Random();
for(int i=size-1;i>=0;i--){
int t=0;
if(i>0){
t = r.nextInt(i);
}
t=list.remove(t).intValue();
cards[i%COL_COUNT][i/COL_COUNT]=t%(size/2);
Log.i("loadCards()", "card["+(i%COL_COUNT)+
"]["+(i/COL_COUNT)+"]=" + cards[i%COL_COUNT][i/COL_COUNT]);
}
}
catch (Exception e) {
Log.e("loadCards()", e+"");
}
}
private TableRow createRow(int y){
TableRow row = new TableRow(context);
row.setHorizontalGravity(Gravity.CENTER);
for (int x = 0; x < COL_COUNT; x++) {
row.addView(createImageButton(x,y));
}
return row;
}
private View createImageButton(int x, int y){
Button button = new Button(context);
button.setBackgroundDrawable(backImage);
button.setId(100*x+y);
button.setOnClickListener(buttonListener);
return button;
}
class ButtonListener implements OnClickListener {
#Override
public void onClick(View v) {
synchronized (lock) {
if(firstCard!=null && seconedCard != null){
return;
}
int id = v.getId();
int x = id/100;
int y = id%100;
turnCard((Button)v,x,y);
}
}
private void turnCard(Button button,int x, int y) {
button.setBackgroundDrawable(images.get(cards[x][y]));
if(firstCard==null){
firstCard = new Card(button,x,y);
}
else{
if(firstCard.x == x && firstCard.y == y){
return; //the user pressed the same card
}
seconedCard = new Card(button,x,y);
turns++;
((TextView)findViewById(R.id.tv1)).setText("Tries: "+turns);
TimerTask tt = new TimerTask() {
#Override
public void run() {
try{
synchronized (lock) {
handler.sendEmptyMessage(0);
}
}
catch (Exception e) {
Log.e("E1", e.getMessage());
}
}
};
Timer t = new Timer(false);
t.schedule(tt, 1300);
}
}
}
class UpdateCardsHandler extends Handler{
#Override
public void handleMessage(Message msg) {
synchronized (lock) {
checkCards();
}
}
public void checkCards(){
if(cards[seconedCard.x][seconedCard.y] == cards[firstCard.x][firstCard.y]){
firstCard.button.setVisibility(View.INVISIBLE);
seconedCard.button.setVisibility(View.INVISIBLE);
}
else {
seconedCard.button.setBackgroundDrawable(backImage);
firstCard.button.setBackgroundDrawable(backImage);
}
firstCard=null;
seconedCard=null;
}
}
}

The easiest way to do this would be to check win conditions with an if statement. This should be done in the method when a turn is actually taken which I assume happens in the turnCard() method.
if (winConditionMet) {
displayWinningScreen();
} else if (lossConditionMet) {
displayLosingScreen();
}
If conditions have been met, then call a method which handles wrapping up that screen, and then launching a new activity. For instance you could add a button to the screen with whatever text you wanted, that when pushed, would take the user to the next screen, be it your score screen, replay screen, main menu, or what have you.
Edit: Okay, since this is a game of memory, you could iterate through the cards at the end of every turn taken and check if any card still has its image set to backImage. If there are none left that are set to backImage, you can then end the game with your code inside of the if statement.
Or, instead of using an ArrayList, you could use some form of Map to keep track of if each card has been permanently turned up or not with the boolean value.

Slideshow with multiple animation and Viewpager images

I have listactivity app forming many rows , one row is images Slideshow , when you click
the row open activity showing ImageView , also there is optionmenu of one item which is( slideshow animation setting ), when you click it , it open checkbox preference
animations screen with multiple checkboxes each one apply different animation to images
slideshow ,where user determine either to slide images with many animations available by
check its checkbox animation name or when uncheck all the checkboxs so the slideshow activity
must show images in viewpager pattern .
android:defaultValue="true" for first animation which is fade_in animation.
BUT: when you open slideshow activity its open the images in imagepager pattern ,and ignoring android:defaultValue="true" for fade_in checkbox,
then after go to preference screen to choose another animation then back to slideshow
activity , it doesn't apply the new animation , i have to press back button many times
till finish all images scrolled in pager then it apply the next animation ,
and sometimes it stuck on image pager and freeze's ,the normal behavior is applying
the next animation once press back button which return to slideshow .
another thing when i was in image viewpager pattern and scroll it ,
it scroll a few number of images then back to first image then i scroll images again
and suddenly it back to first image one and so on .
whole project can be downloaded from here
any help will be appreciated.
SlideShow.java
public class SlideShow extends Activity {
public int currentimageindex=0;
Timer timer;
TimerTask task;
ImageView slidingimage;
private int[] IMAGE_IDS = {
R.drawable.day_one_1, R.drawable.day_one_2, R.drawable.day_one_3,
R.drawable.day_one_4, R.drawable.day_one_5, R.drawable.day_one_6,
R.drawable.day_one_7, R.drawable.day_one_8, R.drawable.day_one_9,
R.drawable.day_one_10, R.drawable.day_one_11, R.drawable.day_one_12,
R.drawable.day_one_13, R.drawable.day_one_14, R.drawable.day_one_15,
R.drawable.day_one_16,R.drawable.day_one_17,R.drawable.day_one_18,
R.drawable.day_one_19,R.drawable.day_one_20
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.slide);
final Handler mHandler = new Handler();
// Create runnable for posting
final Runnable mUpdateResults = new Runnable() {
public void run() {
AnimateandSlideShow();
}
};
int delay = 1000; // delay for 1 sec.
int period = 8000; // repeat every 4 sec.
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
public void run() {
mHandler.post(mUpdateResults);
}
}, delay, period);
}
private void AnimateandSlideShow() {
SharedPreferences getPrefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
boolean animation = getPrefs.getBoolean("animation", true);
boolean animation_one = getPrefs.getBoolean("animation_one", false);
boolean animation_two = getPrefs.getBoolean("animation_two", false);
boolean animation_three = getPrefs.getBoolean("animation_three", false);
boolean animation_four = getPrefs.getBoolean("animation_four", false);
boolean animation_five = getPrefs.getBoolean("animation_five", false);
if (animation == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.custom_anim);
slidingimage.startAnimation(rotateimage);
}else if(animation_one == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.fade_in);
slidingimage.startAnimation(rotateimage);
}else if (animation_two == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.fade_out);
slidingimage.startAnimation(rotateimage);
}else if (animation_three == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.bounce);
slidingimage.startAnimation(rotateimage);
}else if(animation_four == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.fade_in_2);
slidingimage.startAnimation(rotateimage);
}else if (animation_five == true) {
slidingimage = (ImageView)findViewById(R.id.ImageView_slide);
slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
currentimageindex++;
Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.flip);
slidingimage.startAnimation(rotateimage);
}else if(animation == false && animation_one == false && animation_two == false){
Intent intent = new Intent(SlideShow.this, ImagePager.class);
startActivity(intent);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.action_settings:
Intent p = new Intent("com.test.test.SETTING");
startActivity(p);
break;
}
return false;
}
}
ImagePager.java
public class ImagePager extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.pager);
ImagePagerAdapter adapter = new ImagePagerAdapter(this, imageArra);
ViewPager myPager = (ViewPager) findViewById(R.id.myimagepager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
}
private int imageArra[] = { R.drawable.day_one_1, R.drawable.day_one_2, R.drawable.day_one_3,
R.drawable.day_one_4, R.drawable.day_one_5, R.drawable.day_one_6,
R.drawable.day_one_7, R.drawable.day_one_8, R.drawable.day_one_9,
R.drawable.day_one_10, R.drawable.day_one_11, R.drawable.day_one_12,
R.drawable.day_one_13, R.drawable.day_one_14, R.drawable.day_one_15,
R.drawable.day_one_16,R.drawable.day_one_17,R.drawable.day_one_18,
R.drawable.day_one_19,R.drawable.day_one_20
};
public class ImagePagerAdapter extends PagerAdapter {
Activity activity;
int[] imageArray;
public ImagePagerAdapter(Activity act, int[] imgArra) {
imageArray = imgArra;
activity = act;
}
public int getCount() {
return imageArray.length;
}
public Object instantiateItem(View collection, int position) {
LayoutInflater inflater = (LayoutInflater)collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_pager, null);
ImageView im=(ImageView) layout.findViewById(R.id.pager_imageView);
im.setImageResource(imageArray[position]);
((ViewPager) collection).addView(layout, 0);
return layout;
}
#Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
#Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
#Override
public Parcelable saveState() {
return null;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.action_settings:
Intent p = new Intent("com.test.test.SETTING");
startActivity(p);
break;
}
return false;
}
}

Please post the project to be work out a proper solution mean while try using this
First of all as you have declared the ImageView slidingimage; as an instance variable, declare the Animation rotateimage as an instance variables and use it as
rotateimage = AnimationUtils.loadAnimation(this, R.anim.custom_anim);
Now once you add the animation to imageview call the invalidate() method inside the if loops
slidingimage.startAnimation(rotateimage)
slidingimage.invalidate();
And in your imagePager class make ViewPager myPager as static instance variable private static ViewPager myPager and add this code to the class
public static void refreshPager(){
if(myPager != null)
myPager.invalidate();
}
And in your settings class call this method on the onBackPressed() event
#Override
public void onBackPressed() {
ImagePager.refreshPager();
super.onBackPressed();
}
EDIT
All you just need to do is this, add this code in your Slide.java file after the setContentView(R.layout.main); and before final Handler mHandler = new Handler();
SharedPreferences getPrefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
if(getPrefs.getBoolean("Initialization", false) == false){
SharedPreferences.Editor edit = getPrefs.edit();
edit.putBoolean("animation_one", true);
edit.putBoolean("Initialization", true);
edit.commit();
}
Like this
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
SharedPreferences getPrefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
if(getPrefs.getBoolean("Initialization", false) == false){
SharedPreferences.Editor edit = getPrefs.edit();
edit.putBoolean("animation_one", true);
edit.putBoolean("Initialization", true);
edit.commit();
}
final Handler mHandler = new Handler();
// Create runnable for posting
final Runnable mUpdateResults = new Runnable() {
public void run() {
AnimateandSlideShow();
}
};
int delay = 1000; // delay for 1 sec.
int period = 8000; // repeat every 4 sec.
Timer timer = new Timer
// Some more code............
The preference file was not created only ;)
EDIT 2
In you Slide.java file declare a boolean like this
public boolean loaded ;
and code your else if like this
else if(animation_one == false && animation_two == false && animation_three == false
&& animation_four == false && animation_five == false){
Intent intent = new Intent(Slide.this, ImagePager.class);
if(loaded)
startActivity(intent);
loaded = true;
}
Create a static variable in Slide.java public static TimerTask task; and in your ImagePager.java add this code if(imageArra.length-1 == position)Slide.task.cancel(); in instantiateItem() method like this
public Object instantiateItem(View collection, int position) {
LayoutInflater inflater = (LayoutInflater)collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_pager, null);
ImageView im=(ImageView) layout.findViewById(R.id.myimage);
im.setImageResource(imageArray[position]);
((ViewPager) collection).addView(layout, 0);
if(imageArra.length-1 == position)
Slide.task.cancel();
return layout;
}
Hope this works

TextView won't clear for some Reason, Android

I hope this isn't a stupid question. I'm having some trouble clearing a TextView. I've looked around and everyone keeps saying use: textView.setText(""); in onCreate but doesn't seem to work for some reason. Basically, my app just accepts a number from an editText then runs the Fibonacci sequence (when a button is clicked) and displays the result in a textView. Well, the sequence displays fine but I want the textview to clear every time I click the button - so far it just keeps adding more text to what's already there.
Am I placing textView.setText(""); in the wrong location? Or am I just missing some other concept? (I also tried placing it from my OnClick - that didn't work either).
Here is my code:
public class MainActivity extends Activity {
// primary widgets
private EditText editText;
private TextView textView;
private Button button1;
static ArrayList<Integer> fibList = new ArrayList<Integer>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText) findViewById(R.id.editText1);
textView = (TextView) findViewById(R.id.textView2);
button1 = (Button) findViewById(R.id.button1);
//Attempt to clear TextView
textView.setText("");
button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String input = editText.getText().toString();
int number = Integer.parseInt(input);
int tmp = 0;
// confirm input
if (number < 20) {
Toast.makeText(getApplicationContext(),
"You entered: " + number, Toast.LENGTH_LONG).show();
for (int i = 0; i <= number; i++) {
fibList.add(fib(i));
// sum even numbers
if (fib(i) % 2 == 0) {
tmp += fib(i);
}
}
} else {
Toast.makeText(getApplicationContext(),
"Number is too Large: " + number, Toast.LENGTH_LONG)
.show();
}
String array = fibList.toString();
textView.setText(array);
}
});
}
// run fibonacci sequence
public static int fib(int n) {
if (n < 2) {
return n;
} else {
return fib(n - 1) + fib(n - 2);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

If you want the TextView to clear on each button click then the .setText must go in you onClick. The reason you would put the .setText in your onCreate is to clear the text as soon as your activity is created, but you do not have anything to clear just yet since your button has not yet been pushed so setText will do nothing. Also, since your onCreate will only run once for your activity, it will never go back to the setText again. Try the following:
public class MainActivity extends Activity {
// primary widgets
private EditText editText;
private TextView textView;
private Button button1;
static ArrayList<Integer> fibList = new ArrayList<Integer>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText) findViewById(R.id.editText1);
textView = (TextView) findViewById(R.id.textView2);
button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
textView.setText(""); //Clear the TextView
fibList.clear(); //Clear your array list before adding new elements
String input = editText.getText().toString();
int number = Integer.parseInt(input);
int tmp = 0;
// confirm input
if (number < 20) {
Toast.makeText(getApplicationContext(),
"You entered: " + number, Toast.LENGTH_LONG).show();
for (int i = 0; i <= number; i++) {
fibList.add(fib(i));
// sum even numbers
if (fib(i) % 2 == 0) {
tmp += fib(i);
}
}
} else {
Toast.makeText(getApplicationContext(),
"Number is too Large: " + number, Toast.LENGTH_LONG)
.show();
}
String array = fibList.toString();
textView.setText(array);
}
});
}
// run fibonacci sequence
public static int fib(int n) {
if (n < 2) {
return n;
} else {
return fib(n - 1) + fib(n - 2);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

you will need to clear textView on Button click event before adding new results to it.do it as:
button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
textView.setText(""); //<<<<<< clear TextView on Button Click
.....

The problem is more likely in fibList that is not being cleared