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Android Studio

January 11, 2020 Madhusudan Nayak

speech to text in android studio example

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January 11, 2020 Madhusudan Nayak

how to create stopwatch in android studio source code

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January 11, 2020 Madhusudan Nayak

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January 11, 2020 Madhusudan Nayak

textswitcher android example using android studio

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January 11, 2020 Madhusudan Nayak

how to convert text to speech in android studio

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android webview zoom /pinch to zoom android studio

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January 10, 2020 Madhusudan Nayak

pinch to zoom imageview android studio

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Android Studio

January 10, 2020 Madhusudan Nayak

android simple notification example

XML (activity_main.xml)

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
       tools:context=".Notification">

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Notification" />
</RelativeLayout>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/rl"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:padding="16dp"

tools:context=".Notification">

<Button

android:id="@+id/btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerInParent="true"

android:text="Notification" />

</RelativeLayout>

JAVA (MainActivity.java)

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.NotificationManager;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.BitmapFactory;
import android.support.v4.app.NotificationCompat;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.graphics.Bitmap;

public class Notification extends AppCompatActivity {
    private Context mContext;
    private Resources mResources;
    private RelativeLayout mRelativeLayout;
    private Button mButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_notification);

        mContext = getApplicationContext();
        mResources = getResources();
        mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);
        mButton = (Button) findViewById(R.id.btn);
        mButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                NotificationCompat.Builder builder = new NotificationCompat.Builder(mContext);
                builder.setSmallIcon(R.drawable.android);
                Bitmap bitmap = BitmapFactory.decodeResource(mResources, R.drawable.android);
                builder.setLargeIcon(bitmap);
                builder.setContentTitle("Android Studio Pro");
                builder.setContentText("Learn Android App Development");
                int notificationId = 001;
                NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
                manager.notify(notificationId, builder.build());
            }
        });
    }
}

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.app.NotificationManager;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.BitmapFactory;

import android.support.v4.app.NotificationCompat;

import android.view.View;

import android.widget.Button;

import android.widget.RelativeLayout;

import android.graphics.Bitmap;

public class Notification extends AppCompatActivity {

private Context mContext;

private Resources mResources;

private RelativeLayout mRelativeLayout;

private Button mButton;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_notification);

mContext = getApplicationContext();

mResources = getResources();

mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);

mButton = (Button) findViewById(R.id.btn);

mButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

NotificationCompat.Builder builder = new NotificationCompat.Builder(mContext);

builder.setSmallIcon(R.drawable.android);

Bitmap bitmap = BitmapFactory.decodeResource(mResources, R.drawable.android);

builder.setLargeIcon(bitmap);

builder.setContentTitle("Android Studio Pro");

builder.setContentText("Learn Android App Development");

int notificationId = 001;

NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

manager.notify(notificationId, builder.build());

}

});

}

Android Studio

January 10, 2020 Madhusudan Nayak

make mp3 player in android studio source code

XML (activity_main.xml)

<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:gravity="center"
    android:orientation="vertical"
tools:context=".Mp3MediaPlayer">


    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:gravity="center"
        android:text="PLAY/STOP SONG.\nSCRUB WITH SEEKBAR"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/seekbar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


    <SeekBar
        android:id="@+id/seekbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_margin="16dp"
        app:layout_constraintBottom_toTopOf="@+id/button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView5" />


    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        app:layout_constraintBottom_toTopOf="@+id/seekbar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />


    <android.support.design.widget.FloatingActionButton
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        android:layout_marginBottom="32dp"
        android:src="@android:drawable/ic_media_play"
        android:text="PLAY SOUND"
        app:layout_constraintBottom_toTopOf="@+id/adView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/seekbar" />
    
</android.support.constraint.ConstraintLayout>

<android.support.constraint.ConstraintLayout

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="center"

android:gravity="center"

android:orientation="vertical"

tools:context=".Mp3MediaPlayer">

<TextView

android:id="@+id/textView5"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="32dp"

android:gravity="center"

android:text="PLAY/STOP SONG.\nSCRUB WITH SEEKBAR"

android:textStyle="bold"

app:layout_constraintBottom_toTopOf="@+id/seekbar"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

<SeekBar

android:id="@+id/seekbar"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:layout_margin="16dp"

app:layout_constraintBottom_toTopOf="@+id/button"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@+id/textView5" />

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginBottom="8dp"

app:layout_constraintBottom_toTopOf="@+id/seekbar"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent" />

<android.support.design.widget.FloatingActionButton

android:id="@+id/button"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="16dp"

android:layout_marginBottom="32dp"

android:src="@android:drawable/ic_media_play"

android:text="PLAY SOUND"

app:layout_constraintBottom_toTopOf="@+id/adView"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toBottomOf="@+id/seekbar" />

</android.support.constraint.ConstraintLayout>

JAVA (MainActivity.java)

import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;


public class Mp3MediaPlayer extends AppCompatActivity implements Runnable {
    
    MediaPlayer mp3player = new MediaPlayer();
    SeekBar seekBar;
    boolean play = false;
    FloatingActionButton fab;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mp3_media_player);
       
        fab = findViewById(R.id.button);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                playSong();
            }
        });

        final TextView seekBarHint = findViewById(R.id.textView);
        seekBar = findViewById(R.id.seekbar);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                seekBarHint.setVisibility(View.VISIBLE);
            }
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
                seekBarHint.setVisibility(View.VISIBLE);
                int x = (int) Math.ceil(progress / 1000f);
                if (x < 10)
                    seekBarHint.setText("0:0" + x);
                else
                    seekBarHint.setText("0:" + x);
                double percent = progress / (double) seekBar.getMax();
                int offset = seekBar.getThumbOffset();
                int seekWidth = seekBar.getWidth();
                int val = (int) Math.round(percent * (seekWidth - 2 * offset));
                int labelWidth = seekBarHint.getWidth();
                seekBarHint.setX(offset + seekBar.getX() + val
                        - Math.round(percent * offset)
                        - Math.round(percent * labelWidth / 2));
                if (progress > 0 && mp3player != null && !mp3player.isPlaying()) {
                    clearMediaPlayer();
                    fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_play));
                    Mp3MediaPlayer.this.seekBar.setProgress(0);
               }
            }
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                if (mp3player != null && mp3player.isPlaying()) {
                    mp3player.seekTo(seekBar.getProgress());
                }
            }
        });
    }
    public void playSong() {
        try {
            if (mp3player != null && mp3player.isPlaying()) {
                clearMediaPlayer();
                seekBar.setProgress(0);
                play = true;
                fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_play));
            }
            if (!play) {

                if (mp3player == null) {
                    mp3player = new MediaPlayer();
                }

                fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_pause));
                AssetFileDescriptor descriptor = getAssets().openFd("50_Cal_Shells_Drop.mp3");
                mp3player.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());
                descriptor.close();
                mp3player.prepare();
                mp3player.setVolume(0.5f, 0.5f);
                mp3player.setLooping(false);
                seekBar.setMax(mp3player.getDuration());
                mp3player.start();
                new Thread(this).start();
            }
            play = false;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void run() {
        int currentPosition = mp3player.getCurrentPosition();
        int total = mp3player.getDuration();
        while (mp3player != null && mp3player.isPlaying() && currentPosition < total) {
            try {
                Thread.sleep(1000);
                currentPosition = mp3player.getCurrentPosition();
            } catch (InterruptedException e) {
                return;
            } catch (Exception e) {
                return;
            }
            seekBar.setProgress(currentPosition);
        }
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        clearMediaPlayer();
    }

    private void clearMediaPlayer() {
        mp3player.stop();
        mp3player.release();
        mp3player = null;
    }
}

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import android.content.res.AssetFileDescriptor;

import android.media.MediaPlayer;

import android.support.design.widget.FloatingActionButton;

import android.support.v4.content.ContextCompat;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.SeekBar;

import android.widget.TextView;

public class Mp3MediaPlayer extends AppCompatActivity implements Runnable {

MediaPlayer mp3player = new MediaPlayer();

SeekBar seekBar;

boolean play = false;

FloatingActionButton fab;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_mp3_media_player);

fab = findViewById(R.id.button);

fab.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

playSong();

}

});

final TextView seekBarHint = findViewById(R.id.textView);

seekBar = findViewById(R.id.seekbar);

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

seekBarHint.setVisibility(View.VISIBLE);

}

@Override

public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {

seekBarHint.setVisibility(View.VISIBLE);

int x = (int) Math.ceil(progress / 1000f);

if (x < 10)

seekBarHint.setText("0:0" + x);

else

seekBarHint.setText("0:" + x);

double percent = progress / (double) seekBar.getMax();

int offset = seekBar.getThumbOffset();

int seekWidth = seekBar.getWidth();

int val = (int) Math.round(percent * (seekWidth - 2 * offset));

int labelWidth = seekBarHint.getWidth();

seekBarHint.setX(offset + seekBar.getX() + val

- Math.round(percent * offset)

- Math.round(percent * labelWidth / 2));

if (progress > 0 && mp3player != null && !mp3player.isPlaying()) {

clearMediaPlayer();

fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_play));

Mp3MediaPlayer.this.seekBar.setProgress(0);

}

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

if (mp3player != null && mp3player.isPlaying()) {

mp3player.seekTo(seekBar.getProgress());

}

});

}

public void playSong() {

try {

if (mp3player != null && mp3player.isPlaying()) {

clearMediaPlayer();

seekBar.setProgress(0);

play = true;

fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_play));

}

if (!play) {

if (mp3player == null) {

mp3player = new MediaPlayer();

}

fab.setImageDrawable(ContextCompat.getDrawable(Mp3MediaPlayer.this, android.R.drawable.ic_media_pause));

AssetFileDescriptor descriptor = getAssets().openFd("50_Cal_Shells_Drop.mp3");

mp3player.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());

descriptor.close();

mp3player.prepare();

mp3player.setVolume(0.5f, 0.5f);

mp3player.setLooping(false);

seekBar.setMax(mp3player.getDuration());

mp3player.start();

new Thread(this).start();

}

play = false;

} catch (Exception e) {

e.printStackTrace();

}

public void run() {

int currentPosition = mp3player.getCurrentPosition();

int total = mp3player.getDuration();

while (mp3player != null && mp3player.isPlaying() && currentPosition < total) {

try {

Thread.sleep(1000);

currentPosition = mp3player.getCurrentPosition();

} catch (InterruptedException e) {

return;

} catch (Exception e) {

return;

}

seekBar.setProgress(currentPosition);

}

@Override

protected void onDestroy() {

super.onDestroy();

clearMediaPlayer();

}

private void clearMediaPlayer() {

mp3player.stop();

mp3player.release();

mp3player = null;

}

Android Studio

January 10, 2020 Madhusudan Nayak

How To Make Flashlight Application in Android Studio

hello developer, today I will tell you how to create flashlight application in android studio. every smartphone has a flashlight