求大神指教，本人在初学安卓，遇到了这个：Unfortunately，xxx has stopped！网上大部分说的原因是活动没注册，我明明注册了啊到底是什么回事啊，求大神指教package wsg.myapplication;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import java.util.Calendar;
public class ThirdActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.third_layout);
Button bt3=(Button)findViewById(R.id.button3);
bt3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText editText=(EditText)findViewById(R.id.editText);
EditText editText2=(EditText)findViewById(R.id.editText2);
EditText editText3=(EditText)findViewById(R.id.editText3);
int year,month,day;
int year2,month2,day2;
int i1,i2,i,week;
year2=Integer.parseInt(editText.getText().toString());
month2=Integer.parseInt(editText2.getText().toString());
day2=Integer.parseInt(editText3.getText().toString()) ;
i1=dayofyear(year2,month2,day2);
Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
i2=dayofyear(year,month,day);
i=i1-i2;
week=i/7+1;
Intent intent1=new Intent(ThirdActivity.this,FirstActivity.class);
startActivity(intent1);
}
});
}
public int dayofyear(int year,int month,int day){
int dateSum = 0;
for(int i = 1; i < month; i++){
switch(i){
case 1:
case 3:
case 5: case 7: case 8: case 10: case 12:dateSum += 31; break;
case 4: case 6: case 9: case 11:dateSum += 30; break;
case 2:
if(((year % 4 == 0) &&(year % 100 != 0)) || (year % 400 == 0))
dateSum += 29;
else dateSum += 28;
}
}
return dateSum = (dateSum + day);
}
}这段代码有问题吗？从第三个活动跳到第一个活动程序就崩了
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