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pause program between adding and removing a TextView

I'm working on a tank-game and I have a TextView which represents the shot. Now I want to display the TextView at the specific point and remove it after a second that it looks like the shot goes further step by step. But when I add a countdown or a Thread.sleep the program stops for a second but the TextView doesn't disappear. i want to move the TextView over the screen and after every iteration of my for loop i want to wait a second and then rearrange it again?
Here is the code :
public void shot(float power, float winkel, Button button) {
if(winkel>90) {
winkel = winkel - 10;
}else if(winkel<90){
winkel = winkel +10;
}
for (double i = 0; i<100;i = i+ 1) {
final TextView textView = new TextView(context);
textView.setText(".");
double x = tanks.get(currentTank).getxPos()+(i*power*Math.cos(winkel *(Math.PI/180)));
double y = tanks.get(currentTank).getyPos()+(-1*(i*power*Math.sin(winkel *(Math.PI/180))));
double gravity = (-1*((9.81/2)*Math.pow(i,2)));
y = (y-gravity);
textView.setX((float) x);
textView.setY((float) y);
layout.addView(textView);
for (int j = 0;j<tanks.size();j++){
if(textView.getX()>tanks.get(j).getxPos()&&textView.getX()<tanks.get(j).getxPos()+100){
if(textView.getY()>tanks.get(j).getyPos()&&textView.getY()<tanks.get(j).getyPos()+100){
float k = tanks.get(j).getxPos()-textView.getX();
if(k<0){
k = k*-1;
}
makeDamage(k,tanks.get(j));
}
}
}
new CountDownTimer(2000,1000){
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
layout.removeView(textView);
}
}.start();
}
newTurn();
}
I want to pause the program after adding the TextView for one second and the remove it. The program stops but the TextView doesn't disappear till the for-loop finished. Then all TextViews disappear.
Problem solved:
i've added all positions in a array and then this
public void drawShot(final Button firework, final ArrayList<TextView> toDraw){
final int[] i = {0};
final Handler mHandler = new Handler();
firework.setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
#Override
public void onClick(View v) {
firework(firework,toDraw.get(i[0]).getX(),toDraw.get(i[0]).getY());
}
});
Runnable runnable = new Runnable() {
#Override
public void run() {
layout.addView(toDraw.get(i[0]));
if(!check(toDraw.get(i[0]))) {
mHandler.postDelayed(this, (long) 1);
}
i[0]++;
}
};
// start it with:
mHandler.post(runnable);
}

probably need to run the remove command on main thread
Handler mainHandler = new Handler(context.getMainLooper());
Runnable myRunnable = new Runnable() {
#Override
public void run() {
layout.removeView(textView);
}
};
mainHandler.post(myRunnable);

Monitoring Voice in my android app

Iam making an android app which monitor voice in which when the voice loudness exceed a user defined threshold the app dial a specific number .
i done making voice monitoring and compared the highest value with the threshold then dialling the number .everything goes right except when the app returned after the call i find the monitoring isnt right , as the mic sensitivity is very week (measurement is very low ) i have to restart the app to obtain the right measurement , the second question here i make the comparison of the threshold and the last value of sound in the handler at the bottom , is this the right way ? thanks in advanceThis is the App image
Below is The Main activity
public class MainActivity extends AppCompatActivity {
private static final int sampleRate = 11025;
private static final int bufferSizeFactor = 10;
private Button Stop;
private ProgressBar On;
private Button Start;
private AudioRecord audio;
private int bufferSize;
private ProgressBar level;
private TextView textView;
volatile int threshold;
TextView testtextview;
private boolean clicked ;
private Handler handler = new Handler();
private int lastLevel = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
threshold = 20000;
//progressbar detect voice
level = (ProgressBar) findViewById(R.id.progressbar_level);
level.setMax(32676);
//text displaying progress par value
textView = (TextView) findViewById(R.id.textView1);
testtextview = (TextView) findViewById(R.id.textViewtest);
if (audio != null) {
audio.stop();
audio.release();
audio = null;
handler.removeCallbacks(update);
} else {
bufferSize = AudioRecord.getMinBufferSize(sampleRate, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT) * bufferSizeFactor;
audio = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
audio.startRecording();
Thread thread = new Thread(new Runnable() {
public void run() {
readAudioBuffer();
}
});
thread.setPriority(Thread.currentThread().getThreadGroup().getMaxPriority());
thread.start();
handler.removeCallbacks(update);
handler.postDelayed(update, 25);
}
//seekbar let user choose threshhold
SeekBar mSeekBar = (SeekBar) findViewById(R.id.seekBar);
//text displayin user choice
final TextView textViewuser = (TextView) findViewById(R.id.textView3);
mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
textViewuser.setText("" + i + "/32676");
threshold = i ;
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
Stop = (Button) findViewById(R.id.dummy_buttonstop);
On = (ProgressBar) findViewById(R.id.progressBar11);
Start = (Button) findViewById(R.id.dummy_button);
Start.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Start.setVisibility(View.GONE);
On.setVisibility(View.VISIBLE);
clicked = true;
}
});
Stop.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Start.setVisibility(View.VISIBLE);
On.setVisibility(View.GONE);
clicked = false;
}
});
}
private void readAudioBuffer() {
try {
short[] buffer = new short[bufferSize];
int bufferReadResult;
do {
bufferReadResult = audio.read(buffer, 0, bufferSize);
for (int i = 0; i < bufferReadResult; i++) {
if (buffer[i] > lastLevel) {
lastLevel = buffer[i];
}
}
}
while (bufferReadResult > 0 && audio.getRecordingState() == AudioRecord.RECORDSTATE_RECORDING);
if (audio != null) {
audio.release();
audio = null;
handler.removeCallbacks(update);
}
} catch (Exception e) {
e.printStackTrace();
}
}
private Runnable update = new Runnable() {
public void run() {
MainActivity.this.level.setProgress(lastLevel);
textView.setText(lastLevel + "/" + level.getMax());
if (clicked) {
if (lastLevel > threshold) {
clicked=false;
Start.setVisibility(View.VISIBLE);
On.setVisibility(View.GONE);
String url = "tel:01224271138";
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
//recreate();
}
}
lastLevel *= .5;
handler.postAtTime(this, SystemClock.uptimeMillis() + 500);
}
};

Get value of dice

I want make a Dice game, i have use a github project (https://github.com/dylanmtaylor/Simple-Dice).
The MainActivity is available here : https://github.com/dylanmtaylor/Simple-Dice/blob/master/src/com/dylantaylor/simpledice/RollDice.java
I want to get the value of the dice
Exemple :
If the first dice is 1 and the second is 6 we have a total of 7 i want make an action.
I have make a button who change a textview, this button try to get the number of the dices.
TextView hwTextView = (TextView)findViewById(R.id.textView8);
hwTextView.setText(String.valueOf(diceSum));
I have try to get the value "diceSum", "diceImages", "dice", "dice[roll[0]", "dice[roll[1]" but that didn't show a number.
How can i do try to get the value of the dice ?
My MainActivity
public class dices extends AppCompatActivity {
Button button;
private final int rollAnimations = 50;
private final int delayTime = 15;
private Resources res;
private final int[] diceImages = new int[] { R.drawable.d1, R.drawable.d2, R.drawable.d3, R.drawable.d4, R.drawable.d5, R.drawable.d6 };
private Drawable dice[] = new Drawable[6];
private final Random randomGen = new Random();
#SuppressWarnings("unused")
private int diceSum;
private int roll[] = new int[] { 6, 6 };
private ImageView die1;
private ImageView die2;
private LinearLayout diceContainer;
private SensorManager sensorMgr;
private Handler animationHandler;
private long lastUpdate = -1;
private float x, y, z;
private float last_x, last_y, last_z;
private boolean paused = false;
private static final int UPDATE_DELAY = 50;
private static final int SHAKE_THRESHOLD = 800;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
paused = false;
setContentView(R.layout.activity_dixit);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Window window = getWindow();
window.setStatusBarColor(Color.parseColor("#2c3e50"));
}
View view = this.getWindow().getDecorView();
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
button=(Button)findViewById(R.id.button_roll);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
rollDice();
TextView hwTextView = (TextView)findViewById(R.id.textView8);
hwTextView.setText(String.valueOf(diceSum));
}
});
res = getResources();
for (int i = 0; i < 6; i++) {
dice[i] = res.getDrawable(diceImages[i]);
}
die1 = (ImageView) findViewById(R.id.die1);
die2 = (ImageView) findViewById(R.id.die2);
animationHandler = new Handler() {
public void handleMessage(Message msg) {
die1.setImageDrawable(dice[roll[0]]);
die2.setImageDrawable(dice[roll[1]]);
}
};
}
private void rollDice() {
if (paused) return;
new Thread(new Runnable() {
#Override
public void run() {
for (int i = 0; i < rollAnimations; i++) {
doRoll();
}
}
}).start();
MediaPlayer mp = MediaPlayer.create(this, R.raw.roll);
try {
mp.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mp.start();
}
private void doRoll() { // only does a single roll
roll[0] = randomGen.nextInt(6);
roll[1] = randomGen.nextInt(6);
diceSum = roll[0] + roll[1] + 2; // 2 is added because the values of the rolls start with 0 not 1
synchronized (getLayoutInflater()) {
animationHandler.sendEmptyMessage(0);
}
try { // delay to alloy for smooth animation
Thread.sleep(delayTime);
} catch (final InterruptedException e) {
e.printStackTrace();
}
}
public void onResume() {
super.onResume();
paused = false;
}
public void onPause() {
super.onPause();
paused = true;
}
}

I didn't understand why your code didn't work. I myself making a very small games based on "Scarne's dice game(pig)" and myself facing the challenge of retrieving the value of dice rolled. Mind, I am just using one die. This is what I did:
int userScore;
private int[] diceArray = {R.drawable.d1, R.drawable.d2, R.drawable.d3,
R.drawable.d4,R.drawable.d5,R.drawable.d6};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onRollBtnClicked() {
ImageView diceFace = (ImageView) findViewById(R.id.diceFaceImageView);
userScore = randomIntegerGenerator(1,6); // this is what you need
diceFace.setImageResource(diceArray[userScore]);
}
// function to return random integer from min to max
public int randomIntegerGenerator(int min, int max) {
return random.nextInt((max - min) + 1) + min;
}
I am storing my rolled die value in userScore. You can use the similar approach.

App crashing when using SharedPreferences to carry over final score

My android app is crashing when using SharedPreferences to try and carry the final score over from when the game ends. The app crashes inside the onTouchEvent at the line.
SharedPreferences.Editor editor = mySharedPreferences.edit();
The idea is when the game ends it final score that is within the SVGameView to carry over into the SVGameOver class and display there. If anyone could give some advice that would be great!
SVGameView:
public class SVGameView extends SurfaceView implements Runnable {
private SurfaceHolder holder;
Thread thread = null;
volatile boolean running = false;
static final long FPS = 30;
private Sprite sprite;
private long lastClick;
private Bitmap ball, gameOver;
//private int x = 200, y = 200;
private int scorePosX = 100;
private int scorePosY = 100;
private int countScore = 0;
private int life = 1;
SharedPreferences mySharedPreferences;
public SVGameView(Context context) {
super(context);
thread = new Thread(this);
holder = getHolder();
holder.addCallback(new SurfaceHolder.Callback() {
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
boolean retry = true;
running = false;
while (retry) {
try {
thread.join();
retry = false;
} catch (InterruptedException e) {
}
}
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
running = true;
thread.start();
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
}
});
ball = BitmapFactory.decodeResource(getResources(), R.drawable.ball2);
gameOver = BitmapFactory.decodeResource(getResources(),R.drawable.endscreen);
sprite = new Sprite(this, ball);
context.getSharedPreferences("myPrefsFile",Context.MODE_PRIVATE);
}
#Override
public void run() {
long ticksPS = 1000 / FPS;
long startTime;
long sleepTime;
while (running) {
Canvas c = null;
startTime = System.currentTimeMillis();
try {
c = getHolder().lockCanvas();
synchronized (getHolder()) {
update();
onDraw(c);
}
} finally {
if (c != null) {
getHolder().unlockCanvasAndPost(c);
}
}
sleepTime = ticksPS-(System.currentTimeMillis() - startTime);
try {
if (sleepTime > 0)
thread.sleep(sleepTime);
else
thread.sleep(10);
} catch (Exception e) {}
}
}
private void update(){
sprite.update();
}
#Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.WHITE);
Paint paint = new Paint();
canvas.drawPaint(paint);
paint.setColor(Color.WHITE);
paint.setTextSize(48);
canvas.drawText("Score: " + countScore, scorePosX, scorePosY, paint);
canvas.drawText("Lives: " + life, 500, 100, paint);
sprite.onDraw(canvas);
}
#Override
public boolean onTouchEvent(MotionEvent event) {
if(System.currentTimeMillis()-lastClick > 300){
lastClick = System.currentTimeMillis();
}
synchronized (getHolder()){
if(sprite.isHit(event.getX(), event.getY())){
countScore += 1;
sprite.increase();
}else{
life --;
}
}
if(life == 0) {
getContext().startActivity(new Intent(getContext(), SVGameOver.class));
//Intent intent;
//intent = new Intent(getContext(), SVGameView.class);
//intent.putExtra("scoreOutput", countScore);
//Crashes Here
SharedPreferences.Editor editor = mySharedPreferences.edit();
editor.putString("cScore", String.valueOf(countScore));
}
return super.onTouchEvent(event);
}
}
SVGameOver Class:
public class SVGameOver extends Activity implements View.OnClickListener{
Button btnBack;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
btnBack = (Button)findViewById(R.id.btnBack);
btnBack.setOnClickListener(this);
SharedPreferences mySharedPreferences = getSharedPreferences("myPrefsFile", 0);
String theScore = mySharedPreferences.getString("cScore","");
TextView textView = (TextView)findViewById(R.id.scoreOutput);
textView.setText(theScore);
//intent = getIntent();
//String uir = intent.getStringExtra("scoreOutput");
}
#Override
public void onClick(View v) {
}
}
XML Layout:
https://gyazo.com/8e49d02c66dde7ff0e7f09a4fa9eacd2

You're missing:
mySharedPreferences = context.getSharedPreferences("myPrefsFile", Context.MODE_PRIVATE);
in your SVGameView, so mySharedPreferences always null.

You missed assigning SharedPreferencesobject to your reference mySharedPreferences in SVGameView(Context context) -
context.getSharedPreferences("myPrefsFile",Context.MODE_PRIVATE);
Change it to
mySharedPreferences = context.getSharedPreferences("myPrefsFile",Context.MODE_PRIVATE);

You are not initializing the SharedPreference object right.
Use this library, which simplifies the use of SharedPreferences and will make life simpler for you.
Android-SharedPreferences-Helper simplifies usage of the default Android SharedPreferences Class. The developer can do in a few lines
of code which otherwise would have required several. Simple to
understand as compared to the default class and easy to use.

How to trigger alert

My source code is here https://github.com/jackygrahamez/MayDay
I have a HomeActivity.java with an onCreate method
...
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome_screen);
Bundle bundle=getIntent().getExtras();
boolean startedByCUP=false;
if(bundle!=null) {
Log.e(">>>>>>", "START_BY_CUP");
startedByCUP = bundle.getBoolean("START_BY_CUP");
}
...
I am trying to figure out how I can tie the condition where bundle is true to trigger the multiClickEvent so that after 5 clicks an alarm will trigger. The hardware trigger is built into this
HardwareTriggerReceiver.java
...
#Override
public void onReceive(Context context, Intent intent) {
Log.e(">>>>>>>", "in onReceive of HWReceiver");
String action = intent.getAction();
if (!isCallActive(context) && isScreenLocked(context)
&& (action.equals(ACTION_SCREEN_OFF) ||
action.equals(ACTION_SCREEN_ON))) {
multiClickEvent.registerClick(System.currentTimeMillis());
if (multiClickEvent.isActivated()) {
onActivation(context);
resetEvent();
}
}
}
...
MultiClickEvent.java
package com.mayday.md.trigger;
import android.util.Log;
public class MultiClickEvent {
public static final int TIME_INTERVAL = 10000;
private static final int TOTAL_CLICKS = 5;
private Long firstEventTime;
private int clickCount = 0;
public void reset() {
firstEventTime = null;
clickCount = 0;
}
public void registerClick(Long eventTime) {
if (isFirstClick() || notWithinLimit(eventTime)) {
firstEventTime = eventTime;
clickCount = 1;
return;
}
clickCount++;
Log.e(">>>>>>", "MultiClickEvent clickCount = " + clickCount);
}
private boolean notWithinLimit(long current) {
return (current - firstEventTime) > TIME_INTERVAL;
}
private boolean isFirstClick() {
return firstEventTime == null;
}
public boolean isActivated() {
return clickCount >= TOTAL_CLICKS;
}
}
I have tried creating an instance of MultiClickEvent into the HomeActivity but that did not track the clicks.

I ended up tracking the clicks on the Gear Fit app and then sending the alarm all within the onCreate
if(bundle!=null) {
if (!hardwareTriggerReceiver.isCallActive(getApplicationContext())) {
int c = mPref.getInt("numRun", 0);
int TIME_INTERVAL = 10000;
int TOTAL_CLICKS = 5;
long delta = 0;
Long eventTime = System.currentTimeMillis();
mPref.edit().putLong("eventTime", eventTime).commit();
Long firstEventTime = mPref.getLong("firstEventTime", 0);
if (firstEventTime == 0) {
firstEventTime = eventTime;
mPref.edit().putLong("firstEventTime", firstEventTime).commit();
}
delta = eventTime - firstEventTime;
Log.e(">>>>>>", "START_BY_CUP delta "+delta);
if (delta < TIME_INTERVAL) {
c++;
mPref.edit().putInt("numRun",c).commit();
Log.e(">>>>>>", "START_BY_CUP "+c);
if (c >=TOTAL_CLICKS) {
hardwareTriggerReceiver.onActivation(getApplicationContext());
mPref.edit().putInt("numRun", 0).apply();
mPref.edit().putLong("firstEventTime", 0).apply();
}
} else {
mPref.edit().putInt("numRun", 0).apply();
mPref.edit().putLong("firstEventTime", 0).apply();
}
}
}