Draw path on custom View Android Example

Draw path on custom View Android Example

Create MyView.java

public class MyView extends View {

 Paint paint;

 Path path;

 public MyView(Context context) {

  super(context);

  init();

 }

 public MyView(Context context, AttributeSet attrs) {

  super(context, attrs);

  init();

 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {

  super(context, attrs, defStyle);

  init();

 }

 private void init() {

  paint = new Paint();

  paint.setColor(Color.BLUE);

  paint.setStrokeWidth(10);

  paint.setStyle(Paint.Style.STROKE);

  path = new Path();

  path.moveTo(50, 50);

  path.lineTo(50, 500);

  path.lineTo(200, 500);

  path.lineTo(200, 300);

  path.lineTo(350, 300);

 }

 @Override

 protected void onDraw(Canvas canvas) {

  super.onDraw(canvas);

  canvas.drawPath(path, paint);

 }

}

Layout activity_main.xml

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:orientation="vertical"

    tools:context="com.example.androidview.MainActivity" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="android-coding.blogspot.com" />

    <com.example.androidview.MyView

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

Create class MainActivity.java

public class MainActivity extends Activity {

 @Override

 protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

 }

}