Reputation: 49
First time on stack overflow so i apologize if i did this wrong.
I dont see why the id drawing specified cannot be referenced in MainActivity, it simply gives an error under the word drawing and paint_colors and paint_pressed. It suggests creating a fieldin type id.
Here is a partial of the code in the xml
android:id="@+id/drawing"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginBottom="3dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="3dp"
android:layout_weight="1"
android:background="#FFFFFFFF" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical" >
<!-- Top Row -->
<LinearLayout
android:id="@+id/paint_colors"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageButton
android:layout_width="@dimen/large_brush"
android:layout_height="@dimen/large_brush"
android:layout_margin="2dp"
android:background="#FF660000"
android:contentDescription="@string/paint"
android:onClick="paintClicked"
android:src="@drawable/paint"
android:tag="#FF660000" />
Here is the code in the main activity
package com.example.drawingapprick;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
private DrawingPlace drawPlace;
private ImageButton currPaint;
public void paintClicked(View view){
//use chosen color
if(view!=currPaint){
//update color
ImageButton imgView = (ImageButton)view;
String color = view.getTag().toString();
drawPlace.setColor(color);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawPlace = (DrawingPlace)findViewById(R.id.drawing);
LinearLayout paintLayout = (LinearLayout)findViewById(R.id.paint_colors);
currPaint = (ImageButton)paintLayout.getChildAt(0);
currPaint.setImageDrawable(getResources().getDrawable(R.drawable.paint_pressed));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Upvotes: 2
Views: 260
Reputation: 13520
It seems you have probably imported android.R
rather than your.package.name.R
.
Upvotes: 2