我今天刚开始学习Android,当我运行它时,程序崩溃。对不起,我的无能,帮助将不胜感激。我一直在试图弄清楚这一点。我一直在关注YouTube教程,但老师的日食是一个较旧的版本,因此很难学习。下面是代码:您要使用的android.view.View OnClickHanderAndroid计算器崩溃
private OnClickListener multiplyClicked = new OnClickListener()
{
@Override
public void onClick(View v)
{
,改变你的进口这
package com.audiack.newproj;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends Activity
{
LinearLayout layout1;
EditText number1Text;
EditText number2Text;
Button calcButton,derp;
TextView answer;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
layout1 = new LinearLayout(this);
number1Text = new EditText(this);
number2Text = new EditText(this);
calcButton = new Button(this);
answer = new TextView(this);
layout1.setOrientation(LinearLayout.VERTICAL);
answer.setText("0");
calcButton.setText("you suck at math bro");
calcButton.setOnClickListener((android.view.View.OnClickListener) multiplyClicked);
layout1.addView(number1Text);
layout1.addView(number2Text);
layout1.addView(calcButton);
layout1.addView(answer);
setContentView(layout1);
}
private OnClickListener multiplyClicked = new OnClickListener()
{
@Override
public void onClick(DialogInterface arg0, int arg1)
{
String firstString = number1Text.getText().toString();
String secondString = number2Text.getText().toString();
double firstNum = Double.parseDouble(firstString);
double secondNum = Double.parseDouble(secondString);
double result = firstNum * secondNum;
String resultString = String.valueOf(result);
answer.setText(resultString);
}
};
}
什么是堆栈跟踪?就像它崩溃的原因是什么?如果可以,请留下堆栈跟踪。 – RedRumming
请更新您的问题的标题。说*我的应用程序崩溃*意味着什么,就像去看医生,说*我头痛,现在医治我*。 –
我不知道如何获取堆栈跟踪...很抱歉 –