应用程序强行关闭了运行。 [英] Application Forcefully closed on run.

问题描述

当我试图运行code，它说，该应用程序已停止不幸。请帮助我与我的编码。下面是我要解决的code。

 包gaurav.android;

导入的java.util。*;

进口android.app.Activity;
进口android.graphics.Color;
进口android.os.Bundle;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.widget.Button;

公共类EventActivity延伸活动{
    / **第一次创建活动时调用。 * /
    查看colorregion;
    INT [] colorchoices = {Color.BLACK，Color.BLUE，Color.CYAN};
    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;
        colorregion = findViewById（R.id.color_region）;
        按钮clbutton =（按钮）findViewById（R.id.color_button）;
        clbutton.setOnClickListener（（OnClickListener）新ColorRandomizer（））;
    }
    私人无效regioncolor（INT颜色）
    {
        colorregion.setBackgroundColor（颜色）;
    }
    私有类ColorRandomizer实现onClickListener
    {
        公共无效的onClick（视图v）
        {
            随机R =新的随机（）;
            INT指数= r.nextInt（co​​lorchoices.length）;
            regioncolor（colorchoices [指数]）;
        }
    }
}
 

解决方案

更改code

 私有类ColorRandomizer实现onClickListener
    {
        公共无效的onClick（视图v）
        {
            随机R =新的随机（）;
            INT指数= r.nextInt（co​​lorchoices.length）;
            regioncolor（colorchoices [指数]）;
        }
    }
 

本

 私有类ColorRandomizer实现OnClickListener {
        公共无效的onClick（视图v）{
            随机R =新的随机（）;
            INT指数= r.nextInt（co​​lorchoices.length）;
            regioncolor（colorchoices [指数]）;
        }
    }
 

它不是 onClickListener 它的 OnClickListener

When I tried to run the code it says , the application has stopped unfortunately .Please help me with my coding . Below is the code for which I want the solution .

package gaurav.android;

import java.util.*;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class EventActivity extends Activity {
    /** Called when the activity is first created. */
    View colorregion;
    int[] colorchoices = {Color.BLACK , Color.BLUE, Color.CYAN};
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        colorregion = findViewById(R.id.color_region);
        Button clbutton = (Button)findViewById(R.id.color_button);
        clbutton.setOnClickListener((OnClickListener) new ColorRandomizer());
    }
    private void regioncolor(int color)
    {
        colorregion.setBackgroundColor(color);
    }
    private class ColorRandomizer implements onClickListener
    {
        public void onClick(View v)
        {
            Random r= new Random();
            int index= r.nextInt(colorchoices.length);
            regioncolor(colorchoices[index]);
        }
    }
}

解决方案

Change your code

private class ColorRandomizer implements onClickListener
    {
        public void onClick(View v)
        {
            Random r= new Random();
            int index= r.nextInt(colorchoices.length);
            regioncolor(colorchoices[index]);
        }
    }

to this

private class ColorRandomizer implements OnClickListener {
        public void onClick(View v) {
            Random r = new Random();
            int index = r.nextInt(colorchoices.length);
            regioncolor(colorchoices[index]);
        }
    }

its not onClickListener its OnClickListener

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