Linear Timer

Linear Timer is a custom view for Android that enables circular progress animation with respect to given duration.

Linear Timer supports following features -

1. Progress animation in clock-wise or counter clock-wise direction.
2. Get time elapsed since timer started or time left for the counter to complete.
3. Provide Start and finish points for the animation.
4. Pre-fill the progress up-till certain point.
5. Resume the animation on the basis of duration elapsed from total duration.

...and much more.

Download the demo app -

If you're using this library, please let me know; I'll feature your app in the wiki.

Screenshots

Versioning

Linear Timer follows the Semantic Versioning System.

Summery - MAJOR.MINOR.PATCH

Setup

Setup is pretty straight forward. In your project's build.gradle add the following -

allprojects {
  repositories {
      jcenter()
      maven { url "https://jitpack.io" }
  }
}

And, in your app's build.gradle add this under dependencies block -

compile 'com.github.krtkush:LinearTimer:<version_available_on_jitpack>'

example - compile 'com.github.krtkush:LinearTimer:v2.1.1'

Usage

First, you need to add LinearTimerView into your XML layout -

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

<io.github.krtkush.lineartimer.LinearTimerView
    android:id="@+id/linearTimer"
    android:layout_centerHorizontal="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    timer:radius="20dp"
    timer:strokeWidth="3dp"/>

Note that "wrap_content" for height and width is recommended. Using other values might not lead correct rendering of the view.

After adding the view, here is how it is initialized and used -

LinearTimerView linearTimerView = (LinearTimerView)
                                    findViewById(R.id.linearTimer);

LinearTimer linearTimer = new LinearTimer.Builder()
            .linearTimerView(linearTimerView)
            .duration(10 * 1000)
            .build();

// Start the timer.
findViewById(R.id.startTimer).setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
      linearTimer.startTimer();
    }
});

// Restart the timer.
findViewById(R.id.restartTimer).setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View view) {
        linearTimer.restartTimer();
      }
});

// Pause the timer
findViewById(R.id.pauseTimer).setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
         try {
            linearTimer.pauseTimer();
         } catch (IllegalStateException e) {
            e.printStackTrace();
            Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
         }
      }
 });

// Resume the timer
findViewById(R.id.resumeTimer).setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
          try {
            linearTimer.resumeTimer();
          } catch (IllegalStateException e) {
              e.printStackTrace();
              Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
          }
      }
 });

// Reset the timer
findViewById(R.id.resetTimer).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
       try {
           linearTimer.resetTimer();
       } catch (IllegalStateException e) {
           e.printStackTrace();
           Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
       }
   }
});

List of methods available to control the timer -

	Method	Description	Exception
1.	startTimer()	Start the timer.	IllegalStateException
2.	pauseTimer()	Pause the timer.	IllegalStateException
3.	resumeTimer()	Resume the timer from its pause position.	IllegalStateException
4.	resetTimer()	Reset the timer to the starting angle; the timer will not start after reset.	IllegalStateException
5.	restartTimer()	Restart the timer from the starting angle; the timer will start again.	None
5.	getState()	Get current state of the timer.	None

For detailed documentation and on how to customise and use LinearTimer please refer to the wiki.

Refer here for Java Docs. General URL for Java Docs is https://jitpack.io/com/github/krtkush/lineartimer/<insert_version_of_choice>/javadoc/

Contribution

Any kind of contribution will be appreciated; feel free to create a pull request or file issues on the issue tracker.

List of current contributors can be found here.