Hi Folks, Want to draw a line when I touch screen at two points. I can see OnTouch been invoked but after than everything breaks looks, the application crashes
I am using drawLine in Canvas. Please let me know what I am doing wrong Thanks a ton ---------------- <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ android" android:id="@+id/layout_id" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> </LinearLayout> -------------- package <>.DrawPoints; import android.app.Activity; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.TextView; public class DrawPoints extends Activity implements OnTouchListener{ static int i = 0; static float static_x = 0; static float static_y = 0; static float static_x1 = 0; static float static_y1 = 0; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); View topLayout = this.findViewById(R.id.layout_id); // register for events for the view, previously topLayout.setOnTouchListener((OnTouchListener) this); } // the following callback is called when touch event on screen happens @Override public boolean onTouch(View v, MotionEvent event) { String tag = null; if(i == 0) { static_x = event.getX(); static_y = event.getY(); i = 1; } else { static_x1 = event.getX(); static_y1 = event.getY(); } // want to draw a line at this stage after figuring out two screen touches have been performed ?? if(i == 1) { Paint p = new Paint(); p.setColor(Color.WHITE); p.setStyle(Paint.Style.STROKE); Canvas canvas = new Canvas(); canvas.drawColor(Color.BLUE); canvas.drawLine(static_x, static_y, static_x1, static_y1, p); i = 0; } return false; } } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
