Thanks for the speedy reply. I copied all my code into a new project with the 1.5 SDK but, while I'm not getting any code errors, the rectangles don't change transparency. I've thrown in a bunch of log statements to prove that the code is actually getting to the setAlpha commands but when I run it in the emulator it just shows the rectangles as constantly opaque.
Any thoughts? On Jul 23, 11:55 am, Romain Guy <[email protected]> wrote: > mutate() is available only in Android 1.5, it seems like you are > developing with an older SDK. > > On Thu, Jul 23, 2009 at 11:11 AM, > > Erin<[email protected]> wrote: > > > Hi, > > I'm sorry if I've missed something obvious but here goes. > > > I'm currently trying to make an android app where when one moves a > > seekbar past a certain value a blue rectangle goes from transparent to > > opaque. This rectangle/value pairing will be repeated for roughly 10 > > values in the seekbar. (Picture the AT&T bars being controlled by a > > seekbar). I understand that when I try to change the alpha of my > > rectangles (created from a resource in my drawable folder) I'm > > changing both of them at the same time. I also understand the solution > > to this is by calling mutate on my rectangles. What I'm having trouble > > with is actually accomplishing this. > > > The error I get is: The method mutate() is undefined for the type > > Drawable (lines 59 and 61). > > > I've tried changing my rectangles to ImageView and to ShapeDrawable. > > I've also tried modeling it off of the following from one of the > > previous posts but that didn't work either. > > Drawable star = context.getResources().getDrawable(R.drawable.star); > > if (book.isFavorite()) { > > star.mutate().setAlpha(255); // opaque > > } else { > > star.mutate().setAlpha(70); // translucent > > > Any help would be very, very appreciated. > > Thanks, > > Erin > > > Below is all of my code: > > > package com.artificialmuscle.controllers; > > > import android.app.Activity; > > import android.app.AlertDialog; > > import android.content.Context; > > import android.content.DialogInterface; > > import android.graphics.Canvas; > > import android.graphics.drawable.Drawable; > > import android.graphics.drawable.ShapeDrawable; > > import android.graphics.drawable.shapes.RectShape; > > import android.media.MediaPlayer; > > import android.os.Bundle; > > import android.util.AttributeSet; > > import android.util.Log; > > import android.view.View; > > import android.view.View.OnClickListener; > > import android.widget.Button; > > import android.widget.SeekBar; > > import android.widget.SeekBar.OnSeekBarChangeListener; > > > public class Controllers extends Activity { > > /** Called when the activity is first created. */ > > > private final int OPAQUE = 255; > > private final int TRANSPARENT = 75; > > > private MediaPlayer mp = null; > > Drawable rect1 = null; > > Drawable rect2 = null; > > > �...@override > > public void onCreate(Bundle savedInstanceState) { > > super.onCreate(savedInstanceState); > > setContentView(R.layout.main); > > > Button button1 = (Button)findViewById(R.id.button1); > > Button button2 = (Button)findViewById(R.id.button2); > > Button button3 = (Button)findViewById(R.id.button3); > > > button1.setOnClickListener(new OnClickListener(){ > > public void onClick(View viewParam){createDialogs(1);}}); > > button2.setOnClickListener(new OnClickListener(){ > > public void onClick(View viewParam){createDialogs(2);}}); > > button3.setOnClickListener(new OnClickListener(){ > > public void onClick(View > > viewParam){createDialogs(3);}}); > > > rect1 = (ShapeDrawable)this.getResources().getDrawable > > (R.drawable.bluerect); > > rect2 = this.getResources().getDrawable(R.id.rect2); > > > // Ignore the different syntax I was only trying > > options > > rect1.mutate(); > > rect1.setAlpha(TRANSPARENT); > > rect2.mutate().setAlpha(TRANSPARENT); > > > SeekBar mySeekBar = (SeekBar)findViewById(R.id.mySeekBar); > > mySeekBar.setMax(100); > > > OnSeekBarChangeListener myListener = new > > OnSeekBarChangeListener() > > { > > > public void onProgressChanged(SeekBar arg0, int arg1, boolean > > arg2) { > > // TODO Auto-generated method stub > > > Log.i("seekbar","seekbar value changed to > > "+arg1); > > > // play sounds on 10, 20.. 90 > > if (arg1%10 == 0) { > > if (mp != null) { > > mp.stop(); > > mp.release(); > > } > > mp = > > MediaPlayer.create(Controllers.this, R.raw.sine25hz20ms); > > mp.start(); > > } > > > //if (arg1 == 10)Log.i("rectangle","I am at > > 10!!!"); > > > if (arg1 >= 10) {rect1.setAlpha(OPAQUE);}// > > Log.i("rectangle","set > > rect 1");} > > else rect1.setAlpha(TRANSPARENT); > > > if (arg1 >= 20) > > {rect2.setAlpha(OPAQUE);}//Log.i("rectangle","set > > rect 2");} > > else rect2.setAlpha(TRANSPARENT); > > } > > > public void onStartTrackingTouch(SeekBar seekBar) { > > // TODO Auto-generated method stub > > > } > > > public void onStopTrackingTouch(SeekBar seekBar) { > > // TODO Auto-generated method stub > > > }}; > > > mySeekBar.setOnSeekBarChangeListener(myListener); > > > } > > > public void createDialogs(int dialogID){ > > AlertDialog.Builder builder = new AlertDialog.Builder > > (Controllers.this); > > > //if (dialogID == 1) > > switch (dialogID) > > { > > case 1: builder.setMessage("You clicked Button"+dialogID) > > .setNeutralButton("DUH", new > > DialogInterface.OnClickListener > > () { > > public void onClick(DialogInterface > > dialog, int id) { > > dialog.cancel(); > > }// onClick > > }) > > .show(); > > break; > > case 2: > > builder.setMessage("You clicked me, I am Button"+dialogID) > > .setNeutralButton("DUH", new > > DialogInterface.OnClickListener() { > > public void onClick(DialogInterface dialog, > > int id) { > > dialog.cancel(); > > }// onClick > > }) > > .show(); > > break; > > case 3: > > builder.setMessage("You clicked me") > > .setNeutralButton("DUH", new > > DialogInterface.OnClickListener() { > > public void onClick(DialogInterface dialog, > > int id) { > > dialog.cancel(); > > }// onClick > > }) > > .show(); > > break; > > default: > > builder.setMessage("I have no idea what you clicked") > > .setNeutralButton("Shit", new > > DialogInterface.OnClickListener() > > { > > public void onClick(DialogInterface dialog, > > int id) { > > dialog.cancel(); > > }// onClick > > }) > > .show(); > > break; > > } // end of switch > > } > > > private class CustomDrawableView extends View { > > private ShapeDrawable mDrawable; > > > public CustomDrawableView(Context context, AttributeSet attrs) > > { > > super(context, attrs); > > > int x = 10; > > int y = 10; > > int width = 300; > > int height = 50; > > > mDrawable = new ShapeDrawable(new RectShape()); > > mDrawable.getPaint().setColor(0xff74AC23); > > mDrawable.setBounds(x, y, x + width, y + height); > > } > > > protected void onDraw(Canvas canvas) { > > mDrawable.draw(canvas); > > } > > } > > > } > > > And heres the XML: > > <?xml version="1.0" encoding="utf-8"?> > > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ > > android" > > android:orientation="vertical" > > android:layout_width="fill_parent" > > android:layout_height="fill_parent" > > > > > > <TextView android:id="@+id/txt" > > android:layout_width="fill_parent" > > android:layout_height="wrap_content" > > android:text="@string/intro"/> > > > > > ... > > read more » --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. 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