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POandroid - for loop drawing circles not working?
 

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  1. POandroid - for loop drawing circles not working?
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    <p>I am trying to draw multiple circles from an array and it is throwing a "force close" when I try to run the code. Any ideas here?</p> <pre><code>package com.adam.PlaySound; import android.app.Activity; import android.media.MediaPlayer; import android.net.Uri; import android.os.Bundle; import android.util.DisplayMetrics; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView; public class ButtonPress extends Activity { /** Called when the activity is first created. */ int numPlayers = 3; boolean toggle = true; LinearLayout parent; Button button; TextView text; TextView text2; DisplayMetrics dm = new DisplayMetrics(); MediaPlayer mediaPlayer[] = new MediaPlayer[numPlayers]; //this array is a placeholder for the loops in a cluster //essentially this array will be populated through a database //based on which cluster someone is within //and the region arrays will be populated by the same database String soundFiles[] = {"drums_1.mp3", "lead.mp3", "strings.mp3"}; public LoopRegion region[] = new LoopRegion[numPlayers]; float regionX[] = {20, 80, 150}; float regionY[] = {20, 200, 350}; int regionR[] = {50, 80, 100}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //setContentView(R.id.view1); parent = (LinearLayout) findViewById(R.id.parent); button = (Button) findViewById(R.id.button1); text = (TextView) findViewById(R.id.text); text2 = (TextView) findViewById(R.id.text2); parent.setOnTouchListener(Motion); button.setOnClickListener(on_off); for (int i = 0; i &lt; numPlayers; i++){ String path = "http://soundclusters.adamlaskowitz.com/uploads/" + soundFiles[i]; mediaPlayer[i] = new MediaPlayer(); //mediaPlayer[i] = MediaPlayer.create(ButtonPress.this, R.raw.drums_2); mediaPlayer[i] = MediaPlayer.create(ButtonPress.this, Uri.parse(path)); mediaPlayer[i].setLooping(true); } for (int i = 0; i &lt; numPlayers; i++){ region[i] = new LoopRegion(this,regionX[i],regionY[i],regionR[i]); parent.addView(region[i]); } getWindowManager().getDefaultDisplay().getMetrics(dm); } </code></pre> <p>This is the LoopRegion class.</p> <pre><code>package com.adam.PlaySound; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.view.View; /*This class will create a circle region for *each loop within a cluster */ public class LoopRegion extends View { private float x; private float y; private int r; private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); public LoopRegion(Context context, float x, float y, int r) { super(context); mPaint.setColor(0xFFFF0000); this.x = x; this.y = y; this.r = r; } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.drawCircle(x, y, r, mPaint); } public void setCoordinate(float mx, float my){ this.x = mx; this.y = my; //this.r = 300; } } </code></pre> <p>And this is the XML</p> <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/parent" &gt; &lt;TextView android:id="@+id/text" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Not Playing" /&gt; &lt;TextView android:id="@+id/text2" android:layout_height="wrap_content" android:text="Location" android:layout_width="wrap_content" /&gt; &lt;Button android:text="Sound On/Off" android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="wrap_content"&gt; &lt;/Button&gt; &lt;!-- &lt;View android:id="@+id/view1" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;/View&gt;--&gt; &lt;/LinearLayout&gt; </code></pre> <p>Thanks in advance!</p>
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    1. COCheck logcat for the exception. It should point to the line that's causing the problem.
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      1. POandroid - for loop drawing circles not working?
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    2. COSo I realized that I was never defining how many LoopRegion classes to create (this is my circle draw class). I fixed that and it runs without errors now. Only problem is that it is only drawing 1 circle, not each circle for the amount of items I have...
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      1. POandroid - for loop drawing circles not working?
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