Widgets-in-Android

This repo contains implementation of all widgets in Android with clean and modular source code.

Purpose :-

To understand the code of each widget or just simply Ctrl+c and Ctrl+v to use it in your project.

Widgets available :-

1. Toggle Button
2. Check Box
3. Radio Button
4. Rating Bar
5. Floating Action Button
6. Alert Dialog
7. Spinner
8. SeekBar
9. Date Picker
10. Time Picker

Dependencies :-

Only required gradle dependency is -

implementation 'com.google.android.material:material:1.0.0' 

Add it in app level gradle file.

Description :-

1. Toggle Button Usage

In XML File :-

 <ToggleButton
        android:id="@+id/toggleButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textOff="OFF"
        android:textOn="ONN"
        android:layout_marginTop="20dp"
        />

In Java File :-

 private void toggleButton_OnCLickEvent() {
        mToggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(mToggleButton.isChecked())
                    mStatusToggleButton.setText(R.string.statusToggleOn);
                else
                    mStatusToggleButton.setText(R.string.statusToggleOff);
            }
        });
    }

2. CheckBox Usage

In XML File :-

<CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="Check Box 1"
        />

In Java File :-

Use below function to get checked item.

isChecked() : To check if CheckBox is ticked or not

3. RadioButton Usage

In XML File :-

Radio Group ensures that only one radio butoon get selected at a time.

 <RadioGroup
        android:id="@+id/rg1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        >

        <RadioButton
            android:id="@+id/radioButton1"
            android:layout_marginTop="10dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Radio Button 1" />

        <RadioButton
            android:id="@+id/radioButton2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Radio Button 2" />
    </RadioGroup>>

In Java File :-

        rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch(checkedId){
                    case R.id.radioButton1:
                        mStatusRadioGroup.setText(R.string.RadioButton1Selected);
                        break;
                    case R.id.radioButton2:
                        mStatusRadioGroup.setText(R.string.RadioButton2Selected);
                        break;
                }
            }
        });
    }

4. RatingBar Usage

In XML File :-

    <RatingBar
        android:id="@+id/ratingBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

In Java File :-

To get the rating in String format below code can be used.

     String rating = String.valueOf(ratingBar.getRating());

5. Floating Action Button Usage

In XML File :-

   com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/floatingActionButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="480dp"
        android:layout_marginStart="280dp"
        android:onClick="onClickFloatButton1"
        android:clickable="true"
        android:src="@drawable/ic_stat_name"
        android:focusable="true" />

In Java File :-

Just Use onClick attribute of XML to handle click event.

    public void onClickFloatButton1(View view) {
        Intent intent = new Intent(MainActivity.this,SecondActivity.class);
        startActivity(intent);
    }

6. Alert Dialog Usage

In XML File :-

No code needed .

In Java File :-

AlertDialog.Builder is used to create the the dialog while AlertDialog is used to show it.

    private void creatingAlertDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("EXIT");
        builder.setMessage("Do you want to close this activity?");
        builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                finish();
            }
        });
        builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        AlertDialog alertDialog = builder.create();
        alertDialog.show();
    }

7. Spinner Usage

In XML File :-

Replace the entries with your desired array.

  <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="160dp"
        android:entries="@array/cars"
        />

In Java File :-

To get the selected item in spinner we have to use the below code.

  String item = (String) spinner.getSelectedItem();

8. SeekBar Usage

In XML File :-

 <androidx.appcompat.widget.AppCompatSeekBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="80dp"
        android:layout_marginEnd="80dp"
        android:id="@+id/seekBar"
        android:layout_marginTop="20dp"
        />

In Java File :-

private void seekBarProgressDisplay() {
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                seekBarStatus.setText(String.format(getString(R.string.statusProgress), progress));
            }
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
            }
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
            }
        });
    }
    

9. Date Picker

In XML File :-

<DatePicker
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginTop="20dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/datePicker"
        />

In Java File :-

private String getCurrentDate() {
        StringBuilder stringBuilder = new StringBuilder();
        int month = datePicker.getMonth() + 1;  //As it counts month from 0
        int  day = datePicker.getDayOfMonth() ;
        int year = datePicker.getYear();

        stringBuilder.append(day).append("/").append(month).append("/").append(year);
        return  stringBuilder.toString();
    

10. Time Picker

In XML File :-

<TimePicker
        android:id="@+id/timePicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginRight="20dp" />

In Java File :-

 private String getCurrentTime() {
        int hour=0,min=0;
        StringBuilder stringBuilder = new StringBuilder();
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
            hour = timePicker.getHour();
        }
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
            min = timePicker.getMinute();
        }

        stringBuilder.append(hour).append(" : ").append(min);
        return stringBuilder.toString();
    }
    

Bugs and Improvements :-

No bugs.

Dev :- Prakash Gupta