Java.lang.IllegalStateExeception: could not find method in activity class

Question

Java.lang.IllegalStateExeception: could not find method in activity class

I'm not sure why, but I get this exception:

java.lang.IllegalStateException: Could not find a method onButtonClick(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.Button with id 'button19'

in my application and I don’t know how to fix it. For some reason, this only excludes this exception in the tablet layout. Any suggestions?

Here is the layout.xml

<RelativeLayout
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:custom="http://schemas.android.com/apk/res-auto"
    android:id="@+id/rl"
    android:theme="@style/Base.Theme.AppCompat.Light">

    <com.example.czhou.myapplication2.SudokuBoardView
        android:id="@+id/board"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        custom:mCellSize="40dp"
        custom:mOrientationLandscape="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="1"
        android:id="@+id/button10"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/board"
        android:layout_toEndOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="2"
        android:id="@+id/button11"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button10"
        android:layout_toRightOf="@+id/board"
        android:layout_toEndOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="3"
        android:id="@+id/button12"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button11"
        android:layout_toRightOf="@+id/board"
        android:layout_toEndOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="4"
        android:id="@+id/button13"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button12"
        android:layout_toRightOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="5"
        android:id="@+id/button14"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button13"
        android:layout_toRightOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="6"
        android:id="@+id/button15"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button14"
        android:layout_toRightOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="7"
        android:id="@+id/button16"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button15"
        android:layout_toRightOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="8"
        android:id="@+id/button17"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button16"
        android:layout_toRightOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:text="9"
        android:id="@+id/button18"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/button17"
        android:layout_toRightOf="@+id/board"
        android:layout_toEndOf="@+id/board" />

    <Button
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:paddingLeft="4dp"
        android:paddingRight="4dp"
        android:text="Save &amp; Quit"
        android:id="@+id/button19"
        android:background="@drawable/button_background"
        android:onClick="onButtonClick"
        android:layout_below="@+id/eraser"
        android:layout_toRightOf="@+id/button10"
        android:layout_toEndOf="@+id/button10" />

    <ImageButton
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:id="@+id/eraser"
        android:src="@drawable/ic_action_eraser"
        android:background="@drawable/button_background"
        android:clickable="true"
        android:onClick="onImageButtonClick"
        android:layout_alignParentTop="true"
        android:layout_alignLeft="@+id/button19"
        android:layout_alignStart="@+id/button19" />
</RelativeLayout>

Here is the activity class

package com.example.czhou.myapplication2;

import android.app.FragmentManager;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.RelativeLayout;

import java.io.FileOutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;


public class SudokuGameActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game);
        ActionBar actionBar = getSupportActionBar();
        actionBar.hide();
        SudokuBoardView sudokuBoardView = (SudokuBoardView) findViewById(R.id.board);
        sudokuBoardView.setmFileName(this.getIntent().getStringExtra("FILE"));

    }




    public void onButtonClick(View v) {
        Log.i("Button", "Button clicked!");

        Button b = (Button) findViewById(v.getId());
        Log.i("Button", b.getText().toString());

            Log.i("Button", "in the loop!");
            SudokuBoardView sudokuBoardView = (SudokuBoardView) findViewById(R.id.board);
        if(b.getText().equals("Save & Quit")) {
            saveGame();
            finish();
        }else {
            sudokuBoardView.setCellValue(Integer.parseInt(b.getText().toString()));
        }
    }
    public void onImageButtonClick(View v){
        ImageButton ib = (ImageButton) findViewById(v.getId());
        if (ib.getId() == R.id.eraser){
            SudokuBoardView sudokuBoardView = (SudokuBoardView) findViewById(R.id.board);
            sudokuBoardView.setCellValue(0);

        } else {

        }
    }

    public void saveGame(){
        FileOutputStream outputStream;

        String fn = getIntent().getStringExtra("FILE");
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                if (SudokuBoardView.cells[i][j].isEditable){
                    sb.append(",");
                } else {
                    sb.append(".");
                }
                if (SudokuBoardView.cells[i][j].isWrong){
                    sb.append("!");
                } else {
                    sb.append(".");
                }

                sb.append(SudokuBoardView.cells[i][j].getValue());
            }
        }

        try {

            outputStream = openFileOutput(fn, Context.MODE_PRIVATE);
            outputStream.write(sb.toString().getBytes());
            outputStream.close();
            System.out.println("Saving... ");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


}

+1

android android layout button illegalstateexception

Christopher zhou Jan 24 '15 at 14:53

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1 answer

Kirill K · Answer 1 · 2015-02-05T13:32:31+0000

I had a very similar problem, this only happens on Android L, while it works fine on the old version. It looks like an error or an undocumented function in 5.0.

Solution that worked for me:

remove android:theme="@style/Base.Theme.AppCompat.Light"

from your layout.xml. Define the application theme in the AndroidManifest.xml application element as follows:

<application 
         ...
         android:theme="@android:style/Theme.Holo.Light"
         ...  >

Java.lang.IllegalStateExeception: could not find method in activity class

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