I have the .xml
file set up as
<GridLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:columnCount="4"
android:rowCount="6"
android:onClick="dropIn"
android:layout_alignParentEnd="true"
android:id="@+id/gridLayout">
<ImageView
android:id="@+id/imageView1"
android:layout_width="80dp"
android:layout_height="70dp"
android:layout_column="0"
tools:layout_editor_absoluteX="288dp"
tools:layout_editor_absoluteY="180dp"
android:layout_row="0"
android:onClick="dropIn"
android:contentDescription="@null"
android:tag="1"
app:srcCompat="@drawable/stone" />
Anyways, I have plenty more of ImageViews and the thing that makes them different is the id and the tag. I decided to have them recognized by code by their tag. So this is what I currently have:
int[] gameState = {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
public void dropIn(View view) {
ImageView counter = (ImageView) view;
counter.setImageResource(R.drawable.stone);
int tappedCounter = Integer.parseInt(counter.getTag().toString());
try {
if (gameState[tappedCounter] == 2 && gameIsActive) {
gameState[tappedCounter] = 3;
countMe = countMe - 1;
counter.setVisibility(View.INVISIBLE);
} else if (gameState[tappedCounter] == 3 && gameIsActive) {
Toast.makeText(MainActivity.this, "That field is already played!",
Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
Toast.makeText(MainActivity.this, "Oho!",
Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
This all works fine, except when I click an ImageView
that has already been clicked and is now invisible, it crashes the app with the following message:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.nedim.lastonestanding, PID: 9758
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.view.View$DeclaredOnClickListener.onClick(View.java:5374)
at android.view.View.performClick(View.java:6294)
at android.view.View$PerformClick.run(View.java:24770)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.view.View$DeclaredOnClickListener.onClick(View.java:5369)
at android.view.View.performClick(View.java:6294)
at android.view.View$PerformClick.run(View.java:24770)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.ClassCastException: android.widget.GridLayout cannot be cast to android.widget.ImageView
at com.nedim.lastonestanding.MainActivity.dropIn(MainActivity.java:32)
at java.lang.reflect.Method.invoke(Native Method)
at android.view.View$DeclaredOnClickListener.onClick(View.java:5369)
at android.view.View.performClick(View.java:6294)
at android.view.View$PerformClick.run(View.java:24770)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Application terminated.
From what I understand, the Image from the ImageView
disappears and now I am clicking on the GridLayout
and not the ImageView
which causes it to crash as it's not the thing that I want to be working with. I also suppose that the problem is that counter is making all views become ImageView
s, but I am not sure how I could fix this. Any ideas? Thanks!
EDIT: The onCreate method
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView winMessage = findViewById(R.id.winMessage);
winMessage.setText("Let's play! It's Player " + activePlayer + "'s turn.");
}
You have the same attribute android:onClick="dropIn"
declared both for GridLayout
and ImageView
. The 1st one causes the ClassCastException
at the line ImageView counter = (ImageView) view;