I don't see you do anything with rect1 and rect2?? On Thu, Jul 23, 2009 at 2:14 PM, Erin<[email protected]> wrote: > > 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 » > > >
-- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" 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-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
