Fix the color and basic icons of the piano buttons || Android Studio

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout 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:background="@color/colorPrimaryDark"

tools:context=".MainActivity">

<RelativeLayout

android:id="@+id/top_layout"

android:layout_width="match_parent"

android:layout_height="100dp"

android:background="@color/colorPrimaryDark">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="horizontal">

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:orientation="vertical"

android:layout_weight="0.5">

<LinearLayout

android:layout_marginTop="10dp"

android:layout_gravity="center"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="horizontal">

<ImageButton

android:id="@+id/Btnrecord"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/record_ic"/>

<ImageButton

android:id="@+id/BtnStop"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/stop_ic"/>

<ImageButton

android:id="@+id/BtnPlay"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/play_ic"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:orientation="vertical"

android:gravity="center"

android:layout_weight="0.5">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="My Piano"

android:textStyle="bold"

android:textColor="#D3C5C5"

android:layout_gravity="center"

android:textAppearance="@style/TextAppearance.AppCompat.Display1"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:orientation="vertical"

android:layout_weight="0.5">

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:layout_marginTop="10dp"

android:orientation="horizontal">

<Switch

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:id="@+id/adsSwitch"

android:layout_gravity="center"

android:checked="true"/>

<ImageButton

android:id="@+id/BtnSetting"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/setting_ic"/>

<ImageButton

android:id="@+id/BtnAppExit"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/exit_ic"/>

</LinearLayout>

</RelativeLayout>

<RelativeLayout

android:layout_below="@+id/top_layout"

android:layout_width="match_parent"

android:layout_height="match_parent">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="horizontal">

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:orientation="horizontal">

<View

android:id="@+id/d1"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d2"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d3"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d4"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:orientation="horizontal">

<View

android:id="@+id/d5"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d6"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d7"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d8"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:orientation="horizontal">

<View

android:id="@+id/d9"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d10"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d11"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

<View

android:id="@+id/d12"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="4dp"

android:layout_weight="0.5"

android:background="@android:color/white"/>

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="150dp"

android:orientation="horizontal">

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="20dp"

android:layout_marginRight="20dp"

android:layout_weight="0.5">

<View

android:id="@+id/t1"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t2"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t3"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="20dp"

android:layout_marginRight="20dp"

android:layout_weight="0.5">

<View

android:id="@+id/t4"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t5"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t6"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_marginLeft="20dp"

android:layout_marginRight="20dp"

android:layout_weight="0.5">

<View

android:id="@+id/t7"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t8"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

<View

android:id="@+id/t9"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_weight="0.5"

android:layout_marginLeft="4dp"

android:background="@color/colorPrimaryDark"/>

</LinearLayout>

</RelativeLayout>

MainActivity.java

package com.example.mypiano;

import android.annotation.SuppressLint;

import android.media.MediaPlayer;

import android.os.CountDownTimer;

import android.os.Bundle;

import android.view.MotionEvent;

import android.view.View;

import android.widget.ImageButton;

import android.widget.Switch;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

View d1, d2, d3, d4, d5, d6, d7,d8, d9,d10, d11, d12;

View t1, t2, t3, t4, t5, t6, t7, t8, t9;

Switch AdsSwitch;

ImageButton record, stop, play;

ImageButton Appsetting, appExit;

private MediaPlayer mD1, mD2, mD3,mD4,mD5,mD6,mD7,mD8,mD9,mD10,mD11,mD12;

private MediaPlayer mT1, mT2,mT3,mT4,mT5,mT6,mT7,mT8,mT9;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mD1 = MediaPlayer.create(this, R.raw.d1);

mD2 = MediaPlayer.create(this, R.raw.d2);

mD3 = MediaPlayer.create(this, R.raw.d3);

mD4 = MediaPlayer.create(this, R.raw.d4);

mD5 = MediaPlayer.create(this, R.raw.d5);

mD6 = MediaPlayer.create(this, R.raw.d6);

mD7 = MediaPlayer.create(this, R.raw.d7);

mD8 = MediaPlayer.create(this, R.raw.d8);

mD9 = MediaPlayer.create(this, R.raw.d9);

mD10 = MediaPlayer.create(this, R.raw.d10);

mD11 = MediaPlayer.create(this, R.raw.d11);

mD12 = MediaPlayer.create(this, R.raw.d12);

mT1 = MediaPlayer.create(this, R.raw.t1);

mT2 = MediaPlayer.create(this, R.raw.t2);

mT3 = MediaPlayer.create(this, R.raw.t3);

mT4 = MediaPlayer.create(this, R.raw.t4);

mT5 = MediaPlayer.create(this, R.raw.t5);

mT6 = MediaPlayer.create(this, R.raw.t6);

mT7 = MediaPlayer.create(this, R.raw.t7);

mT8 = MediaPlayer.create(this, R.raw.t8);

mT9 = MediaPlayer.create(this, R.raw.t9);

d1 = findViewById(R.id.d1);

d2 = findViewById(R.id.d2);

d3 = findViewById(R.id.d3);

d4 = findViewById(R.id.d4);

d5 = findViewById(R.id.d5);

d6 = findViewById(R.id.d6);

d7 = findViewById(R.id.d7);

d8 = findViewById(R.id.d8);

d9 = findViewById(R.id.d9);

d10 = findViewById(R.id.d10);

d11 = findViewById(R.id.d11);

d12 = findViewById(R.id.d12);

t1 = findViewById(R.id.t1);

t2 = findViewById(R.id.t2);

t3 = findViewById(R.id.t3);

t4 = findViewById(R.id.t4);

t5 = findViewById(R.id.t5);

t6 = findViewById(R.id.t6);

t7 = findViewById(R.id.t7);

t8 = findViewById(R.id.t8);

t9 = findViewById(R.id.t9);

AdsSwitch = findViewById(R.id.adsSwitch);

record = findViewById(R.id.Btnrecord);

stop = findViewById(R.id.BtnStop);

play = findViewById(R.id.BtnPlay);

Appsetting = findViewById(R.id.BtnSetting);

appExit = findViewById(R.id.BtnAppExit);

appExit.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

finish();

}

});

Appsetting.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Toast.makeText(MainActivity.this, "Piano Setting", Toast.LENGTH_SHORT).show();

}

});

d1.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD1.start();

d1.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d1.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d2.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD2.start();

d2.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d2.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d3.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD3.start();

d3.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d3.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d4.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD4.start();

d4.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d4.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d5.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD5.start();

d5.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d5.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d6.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD6.start();

d6.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d6.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d7.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD7.start();

d7.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d7.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d8.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD8.start();

d8.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d8.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d9.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD9.start();

d9.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d9.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d10.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD10.start();

d10.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d10.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d11.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD11.start();

d11.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d11.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

d12.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mD12.start();

d12.setBackgroundColor(getColor(R.color.touched));

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d12.setBackgroundColor(getColor(R.color.return_key));

}

}.start();

return false;

}

});

t1.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT1.start();

t1.setBackgroundColor(getColor(R.color.t_toched));

d1.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d1.setEnabled(true);

t1.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t2.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT2.start();

t2.setBackgroundColor(getColor(R.color.t_toched));

d2.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d2.setEnabled(true);

t2.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t3.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT3.start();

t3.setBackgroundColor(getColor(R.color.t_toched));

d3.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d3.setEnabled(true);

t3.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t4.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT4.start();

t4.setBackgroundColor(getColor(R.color.t_toched));

d4.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d4.setEnabled(true);

t4.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t5.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT5.start();

t5.setBackgroundColor(getColor(R.color.t_toched));

d5.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d5.setEnabled(true);

t5.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t6.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT6.start();

t6.setBackgroundColor(getColor(R.color.t_toched));

d6.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d6.setEnabled(true);

t6.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t7.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT7.start();

t7.setBackgroundColor(getColor(R.color.t_toched));

d7.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d7.setEnabled(true);

t7.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t8.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT8.start();

t8.setBackgroundColor(getColor(R.color.t_toched));

d8.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d8.setEnabled(false);

t8.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

t9.setOnTouchListener(new View.OnTouchListener() {

@SuppressLint("NewApi")

@Override

public boolean onTouch(View v, MotionEvent event) {

mT9.start();

t9.setBackgroundColor(getColor(R.color.t_toched));

d9.setEnabled(false);

new CountDownTimer(1*100, 100){

@Override

public void onTick(long millisUntilFinished) {

String.valueOf(millisUntilFinished/100);

}

@SuppressLint("NewApi")

@Override

public void onFinish() {

d9.setEnabled(true);

t9.setBackgroundColor(getColor(R.color.colorPrimaryDark));

}

}.start();

return false;

}

});

}

color.xml

<?xml version="1.0" encoding="utf-8"?>

<color name="return_key">@android:color/white</color>

</resources>

Fix the color and basic icons of the piano buttons || Android Studio

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