>> <> is not a valid package name in java. Is that some kind of unicode chars? It was a typo from my part, had ASCII chars in "<>" place
On Apr 14, 11:39 pm, Raphael <[email protected]> wrote: > Note that if you want you can use your custom view directly in your > XML file, without having to manually add it to the layout at runtime. > To do that: > - declare your view as a static class or in it's separate java file, > let's say mypackage.DrawPoints.Mems > - write something like this in your XML: > <LinearLayout ...attributes...> > < mypackage.DrawPoints.Mems android:layout_width="fill_parent" > android:layout_height="fill_parent" > /> > </LinearLayout> > > Note that in the XML layout editor you can use Control-Space to > trigger auto-completion on the attributes and values. It doesn't know > your custom class name though. > > By the way, how do you get: > package <>.DrawPoints; > > <> is not a valid package name in java. Is that some kind of unicode chars? > R/ > > On Tue, Apr 14, 2009 at 6:53 PM, gandor <[email protected]> wrote: > > > Thanks. Yes now it works. Had to use event.getAction and draw > > method. > > > 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.LinearLayout; > > import android.widget.TextView; > > > public class DrawPoints extends Activity implements OnTouchListener{ > > static int i = 0; > > float x = 200; > > float y = 200; > > float x1 = 0; > > float 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); > > LinearLayout layMain = (LinearLayout)this.findViewById > > (R.id.layout_id); > > // register for events for the view, previously > > //topLayout.setOnTouchListener((OnTouchListener) this); > > layMain.setOnTouchListener((OnTouchListener) this); > > layMain.addView(new Mens(this)); > > > } > > > // the following callback is called when touch event on screen > > happens > > �...@override > > public boolean onTouch(View v, MotionEvent event) { > > String tag = null; > > > switch (event.getAction()) > > { > > case MotionEvent.ACTION_DOWN: > > { > > x = event.getX(); > > y = event.getY(); > > } > > } > > return false; > > } > > > public class Mens extends View { > > > public Mens(Context context) > > { > > super(context); > > > } > > > protected void onDraw(Canvas canvas) > > { > > Paint p = new Paint(); > > p.setColor(Color.RED); > > > canvas.drawLine(15, 15, x , y, p); > > invalidate(); > > } > > > } > > > } > > > On Apr 13, 10:33 pm, Raphael <[email protected]> wrote: > >> A couple suggestions: > > >> - don't make your x/y fields static. > >> - in onTouch, test that MotionEvent.getAction() is ACTION_DOWN. > >> - to draw you should create a custom View class and override the > >> onDraw method. See ApiDemos or the LunarLander samples for a start. > > >> R/ > > >> On Mon, Apr 13, 2009 at 5:14 PM, gandor <[email protected]> wrote: > > >> > Hi, > > >> > 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 > > >> > 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(); > > >> > } > > >> > 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; > >> > } > > >> > } > > >> > <?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> --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. 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