Databases
StackOverflow2013
Postsdbo
POandroid ClassCastException on findViewById
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POandroid ClassCastException on findViewById
    primarykey
    data
    text
    <p>I've got a little problem where I can't find the mistake I am making, it's probably something really simple.</p> <p>I've got the following layout</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="10dp" &gt; &lt;CheckBox android:id="@+id/checkBox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:focusable="false" /&gt; &lt;ImageView android:id="@+id/imgStarred" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignRight="@+id/checkBox" android:layout_below="@+id/checkBox" android:layout_marginRight="4dp" android:src="@drawable/ic_star_gray"/&gt; &lt;CheckedTextView android:id="@+id/lblTitle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/checkBox" android:layout_marginLeft="10dp" android:layout_marginTop="8dp" android:layout_toLeftOf="@+id/imgPriority" android:layout_toRightOf="@+id/checkBox" android:text="CheckedTextView" /&gt; &lt;TextView android:id="@+id/lblDescription" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignRight="@+id/lblTitle" android:layout_below="@+id/lblTitle" android:layout_marginLeft="10dp" android:layout_toRightOf="@+id/checkBox" android:text="Small Text" android:textAppearance="?android:attr/textAppearanceSmall" /&gt; &lt;ImageView android:id="@+id/imgPriority" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_marginRight="8dp" android:layout_marginTop="8dp" android:src="@drawable/ic_priority_5" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>When I try to get a view from it with findViewById i get a ClassCast Exception</p> <pre><code>11-23 10:12:07.680: E/AndroidRuntime(5965): FATAL EXCEPTION: main 11-23 10:12:07.680: E/AndroidRuntime(5965): java.lang.ClassCastException: android.widget.ImageView 11-23 10:12:07.680: E/AndroidRuntime(5965): at com.bilobait.taskbox.task.TaskBoxTaskList$TaskView.&lt;init&gt;(TaskBoxTaskList.java:459) 11-23 10:12:07.680: E/AndroidRuntime(5965): at com.bilobait.taskbox.task.TaskBoxTaskList$TaskBoxTaskAdapter.getView(TaskBoxTaskList.java:423) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.AbsListView.obtainView(AbsListView.java:1435) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.ListView.measureHeightOfChildren(ListView.java:1256) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.ListView.onMeasure(ListView.java:1167) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.LinearLayout.measureVertical(LinearLayout.java:386) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.LinearLayout.measureVertical(LinearLayout.java:531) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.View.measure(View.java:8313) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewRoot.performTraversals(ViewRoot.java:839) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.view.ViewRoot.handleMessage(ViewRoot.java:1862) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.os.Handler.dispatchMessage(Handler.java:99) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.os.Looper.loop(Looper.java:123) 11-23 10:12:07.680: E/AndroidRuntime(5965): at android.app.ActivityThread.main(ActivityThread.java:3695) 11-23 10:12:07.680: E/AndroidRuntime(5965): at java.lang.reflect.Method.invokeNative(Native Method) 11-23 10:12:07.680: E/AndroidRuntime(5965): at java.lang.reflect.Method.invoke(Method.java:507) 11-23 10:12:07.680: E/AndroidRuntime(5965): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 11-23 10:12:07.680: E/AndroidRuntime(5965): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 11-23 10:12:07.680: E/AndroidRuntime(5965): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Can somebody help me / give me a hint what i'm missing??</p> <p>Thx</p> <p>EDIT: Forgot something, when I take away </p> <pre><code>android:layout_toLeftOf="@+id/imgPriority" </code></pre> <p>from CheckedTextView the error is gone.</p> <pre><code>lblTitle = (TextView)findViewById(R.id.lblTitle); lblDescription = (TextView)findViewById(R.id.lblDescription); cbCheck = (CheckBox)findViewById(R.id.checkBox); imgStar = (ImageView)findViewById(R.id.imgStarred); imgPriority = (ImageView)findViewById(R.id.imgPriority); </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USSkuld
    1. USn0n4m3
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POandroid ClassCastException on findViewById
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POandroid ClassCastException on findViewById
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    3. VO
      singulars
      1. POandroid ClassCastException on findViewById
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhat id do you pass to `findViewById` method?
      singulars
      1. POandroid ClassCastException on findViewById
      1. USa.ch.
    2. COAre u typecasting the view properly? It should be like ImageView imgStarred = (ImageView) findViewById(R.id.imgStarred);
      singulars
      1. POandroid ClassCastException on findViewById
      1. USSush
    3. COPlease provide your java file if possible
      singulars
      1. POandroid ClassCastException on findViewById
      1. USDinesh Prajapati
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload