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POHow do you send an Array of custom objects between activities?
 

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  1. POHow do you send an Array of custom objects between activities?
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    <p>I Have found many places where they send an ArrayList but I need to be able to send a simple Array of my custom object "Card" from activity A to B. I beleive I have made the classes in a way that will allow my Object to be passed as an extra from an Intent. This is my Parcelable class Card:</p> <pre><code>import android.os.Parcel; import android.os.Parcelable; public class Card implements Parcelable{ public String suit; public int value; public String color; public Card(String suit, int value){ this.suit = suit; this.value = value; if(suit == "hearts" || suit == "diamonds"){ this.color = "red"; }else{ this.color = "black"; } } public String toString(){ String s = suit; return s; } private Card(Parcel in) { value = in.readInt(); color = in.readString(); suit = in.readString(); } public int describeContents() { return 0; } public void writeToParcel(Parcel out, int flags) { out.writeInt(value); out.writeString(color); out.writeString(suit); } public static final Parcelable.Creator&lt;Card&gt; CREATOR = new Parcelable.Creator&lt;Card&gt;() { public Card createFromParcel(Parcel in) { return new Card(in); } public Card[] newArray(int size) { return new Card[size]; } }; } </code></pre> <p>and this is how I am adding it to the intent in the activity A (e.i. the main activity):</p> <pre><code> Card[] myCardArray = new Card[7]; //Note the card array is filled before starting the intent. Intent intnt = new Intent(this, B.class); intnt.putExtra("array", myCardArray); startActivity(intnt); </code></pre> <p>I am then retriving it in Activity B's onCreate method as so:</p> <pre><code> allCards = (Card[]) getIntent().getExtras().getParcelableArray("array"); </code></pre> <p>unfourntunatley the app is crashing as soon as it reaches the code in Activity B. Am I calling it the wrong way? Here is the logcat</p> <pre><code>09-05 15:27:37.007: E/Trace(26971): error opening trace file: No such file or directory (2) 09-05 15:27:37.007: D/ActivityThread(26971): setTargetHeapUtilization:0.25 09-05 15:27:37.007: D/ActivityThread(26971): setTargetHeapIdealFree:8388608 09-05 15:27:37.007: D/ActivityThread(26971): setTargetHeapConcurrentStart:2097152 09-05 15:27:37.228: D/libEGL(26971): loaded /system/lib/egl/libEGL_adreno200.so 09-05 15:27:37.228: D/libEGL(26971): loaded /system/lib/egl/libGLESv1_CM_adreno200.so 09-05 15:27:37.228: D/libEGL(26971): loaded /system/lib/egl/libGLESv2_adreno200.so 09-05 15:27:37.248: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:37.268: E/(26971): &lt;s3dReadConfigFile:75&gt;: Can't open file for reading 09-05 15:27:37.268: E/(26971): &lt;s3dReadConfigFile:75&gt;: Can't open file for reading 09-05 15:27:37.268: D/OpenGLRenderer(26971): Enabling debug mode 0 09-05 15:27:39.640: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:41.963: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:42.844: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:44.425: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:46.257: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:47.799: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:49.781: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:51.182: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:51.943: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:55.237: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:56.468: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:57.910: I/Adreno200-EGLSUB(26971): &lt;ConfigWindowMatch:2087&gt;: Format RGBA_8888. 09-05 15:27:59.101: D/AndroidRuntime(26971): Shutting down VM 09-05 15:27:59.101: W/dalvikvm(26971): threadid=1: thread exiting with uncaught exception (group=0x412e8438) 09-05 15:27:59.111: E/AndroidRuntime(26971): FATAL EXCEPTION: main 09-05 15:27:59.111: E/AndroidRuntime(26971): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.marco.pokerhands2/com.marco.pokerhands2.DisplayHands}: java.lang.ClassCastException: android.os.Parcelable[] cannot be cast to com.marco.pokerhands2.Card[] 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2088) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2113) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread.access$700(ActivityThread.java:139) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1224) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.os.Handler.dispatchMessage(Handler.java:99) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.os.Looper.loop(Looper.java:137) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread.main(ActivityThread.java:4918) 09-05 15:27:59.111: E/AndroidRuntime(26971): at java.lang.reflect.Method.invokeNative(Native Method) 09-05 15:27:59.111: E/AndroidRuntime(26971): at java.lang.reflect.Method.invoke(Method.java:511) 09-05 15:27:59.111: E/AndroidRuntime(26971): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 09-05 15:27:59.111: E/AndroidRuntime(26971): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 09-05 15:27:59.111: E/AndroidRuntime(26971): at dalvik.system.NativeStart.main(Native Method) 09-05 15:27:59.111: E/AndroidRuntime(26971): Caused by: java.lang.ClassCastException: android.os.Parcelable[] cannot be cast to com.marco.pokerhands2.Card[] 09-05 15:27:59.111: E/AndroidRuntime(26971): at com.marco.pokerhands2.DisplayHands.onCreate(DisplayHands.java:30) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.Activity.performCreate(Activity.java:5048) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 09-05 15:27:59.111: E/AndroidRuntime(26971): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2052) 09-05 15:27:59.111: E/AndroidRuntime(26971): ... 11 more </code></pre>
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    1. USGeobits
    1. USuser2748360
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    1. COPlease post the logcat. It contains a stack trace which will tell you exactly which line causes the crash.
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      1. POHow do you send an Array of custom objects between activities?
      1. USCode-Apprentice
    2. COEverything looks good, the only thing I can think of (and not sure it will help) is to be implicit about putting the array into the intent. By which I mean making a Bundle, calling putParcelableArray on it, and then putting the bundle into the Intent using putExtras()
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      1. POHow do you send an Array of custom objects between activities?
      1. USFunkTheMonk
    3. COSorry about the format of the logcat, Code-Guru I was not able to upload it as an image
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      1. POHow do you send an Array of custom objects between activities?
      1. USuser2748360
 

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