Question

所以我搜索了很多，但我还没有找到解决方案......因为每个程序都不同。

基本上这个程序的作用是，在edittext字段中输入数字，然后相互乘以，减去和所有好东西。继承我的logcat

05-28 16：37：55.847：I / ActivityManager（274）：启动proc xela.kasea.flyffresell以获取活动xela.kasea.flyffresell / .Main：pid = 779 uid = 10046 gids = {50046,1028}

那几乎就是这样的样子，现在我觉得我不需要把清单放在这里，因为我只有一个类（主要）而且那里没有任何错误。注意：拿出包名。

继承我的班级：

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.ToggleButton;

public class Main extends Activity implements OnClickListener{

EditText perin, amountPrUnit, buy, sell;
ToggleButton lazy;
Button clear, submit, ret;
double ans, subAnswer;
TextView pEarned, tAmount;
int a = Integer.parseInt(perin.getText().toString());
int b = Integer.parseInt(amountPrUnit.getText().toString());
int c = Integer.parseInt(buy.getText().toString());
int d = Integer.parseInt(sell.getText().toString());

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.display);
    Log.i("Tag2", "This is my error msg");
    initalizer();
    lazy.setOnClickListener(this);
    clear.setOnClickListener(this);
    submit.setOnClickListener(this);
    ret.setOnClickListener(this);
    /*String a = perin.getText().toString();
    String b = amountPrUnit.getText().toString();
    String c = buy.getText().toString();
    String d = sell.getText().toString(); */
}

private void initalizer() {
    // TODO Auto-generated method stub
    perin = (EditText) findViewById(R.id.etHowRich);
    amountPrUnit =  (EditText) findViewById(R.id.etAmountPrUnit);
    buy = (EditText) findViewById(R.id.etBuying);
    sell = (EditText) findViewById(R.id.etSellingPrUnit);
    lazy = (ToggleButton) findViewById(R.id.tbBuying);
    clear = (Button) findViewById(R.id.bClear);
    submit = (Button) findViewById(R.id.bSubmit);
    ret = (Button) findViewById(R.id.bReturn);
    pEarned = (TextView) findViewById(R.id.tvEarned);
    tAmount = (TextView) findViewById(R.id.tvAmount);
    /*int a = Integer.parseInt(perin.getText().toString());
    int b = Integer.parseInt(amountPrUnit.getText().toString());
    int c = Integer.parseInt(buy.getText().toString());
    int d = Integer.parseInt(sell.getText().toString());*/
}

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch(v.getId()){
    case R.id.bClear:
        perin.setText("");
        amountPrUnit.setText("");
        buy.setText("");
        sell.setText("");
        lazy.setChecked(false);
        break;
    case R.id.bReturn:
        setContentView(R.layout.display);
        break;
    case R.id.bSubmit:
        pEarned.setText(c*d-(a-(b*c)));
        tAmount.setText(c*d+(a-(a-(b*c))));
        setContentView(R.layout.finish);
        break;
    case R.id.tbBuying:
        if (lazy.isChecked()){
        buy.setText("");
        double subAnswer = 0;
        int ans = 0;
        subAnswer = a/b;
        ans = (int) Math.floor(subAnswer);
        /*new Integer((int) ans).toString();
        Integer.toString(answer);*/
        buy.setText(ans);;
        }
        break;
    }
}
}

Answer 1

请在下面

int a = Integer.parseInt(perin.getText().toString());
int b = Integer.parseInt(amountPrUnit.getText().toString());
int c = Integer.parseInt(buy.getText().toString());
int d = Integer.parseInt(sell.getText().toString());

在initalizer();

之后

您正在尝试在初始化之前使用这些组件......

最后，您的代码应如下所示：

yourcode......
initalizer();
int a = Integer.parseInt(perin.getText().toString());
    int b = Integer.parseInt(amountPrUnit.getText().toString());
    int c = Integer.parseInt(buy.getText().toString());
    int d = Integer.parseInt(sell.getText().toString()); 

 then rest of the code

遗憾的是<app name =“”>已停止</app>

1 个答案: