当我单击按钮（此代码中的标签为 mbutton）时，我的应用程序似乎无缘无故地冻结了。logcat 没有提供有关此冻结原因的信息。下面是整个类的代码以及它下面的类的 XML
代码
public class WorkoutChoice extends Activity
{
private TextView mDateDisplay,cDateDisplay;
private Button mPickDate;
private int mYear,mMonth,mDay;
private int cYear,cMonth,cDay;
static final int DATE_DIALOG_ID = 0;
Button mButton;
EditText cweight,nweight;
TextView t,c;
String s,s2,cDate,mDate;
int current,target;
DataBaseHelper db = new DataBaseHelper(this);
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.choice);
final Context context = getApplicationContext();
final int duration = Toast.LENGTH_SHORT;
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
cDateDisplay = (TextView) findViewById(R.id.Current);
mPickDate = (Button) findViewById(R.id.pickDate);
mPickDate.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
final Calendar c = Calendar.getInstance();
cYear = c.get(Calendar.YEAR);
cMonth = c.get(Calendar.MONTH);
cDay = c.get(Calendar.DAY_OF_MONTH);
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
cDate = (cDay+"-"+cMonth+"-"+cYear);
mDate = (mDay+"-"+mMonth+"-"+mYear);
Date past = new Date(112, cMonth, cDay); // current Date
Date today = new Date(112, 11, 18); // date Choosen by the user
final int days = Days.daysBetween(new DateTime(past), new DateTime(today)).getDays()+1;
cDateDisplay.setText(cDate);
//display the current date (this method is below)
updateDisplay();
mButton = (Button)findViewById(R.id.get);
cweight = (EditText)findViewById(R.id.cweight);
nweight = (EditText)findViewById(R.id.nweight);
t = (TextView)findViewById(R.id.out);
mButton.setOnClickListener(
new View.OnClickListener()
{
public void onClick(View view)
{
db.open();
while(cweight != null && nweight != null);
{
s = WorkoutChoice.this.cweight.getText().toString();
current = Integer.parseInt(s);
s2 = WorkoutChoice.this.nweight.getText().toString();
target = Integer.parseInt(s2);
db.deleteFirst();
db.insertTitle(mDate, current, target);
CharSequence text = "Goal Set\n"+"Target Date"+mDate+"\n"+"Current Weight "+current+"\n"+"Target Weight "+target;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
/*Intent i = new Intent();
i.setClassName("com.b00348312.workout","com.b00348312.workout.WorkoutMenu");
startActivity(i);*/
}
db.close();
}
});
}
public void convert(View view)
{
Intent i = new Intent();
i.setClassName("com.b00348312.workout","com.b00348312.workout.convert");
startActivity(i);
}
private void updateDisplay() {
mDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("-")
.append(mMonth + 1).append("-")
.append(mYear).append(" "));
/*cDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(cDay).append("-")
.append(cMonth + 1).append("-")
.append(cYear).append(" "));*/
}
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this,
mDateSetListener,
mYear, mMonth, mDay);
}
return null;
}
}
<?xml version="1.0" encoding="utf-8"?>
<TextView
android:id="@+id/Cdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Current Date"
android:textAppearance="?android:attr/textAppearanceSmall" android:textColor="#000000"/>
<TextView
android:id="@+id/Current"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceMedium" android:textColor="#000000"/>
<TextView
android:id="@+id/blank"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Target"
android:textColor="#000000" />
<TextView
android:id="@+id/dateDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceMedium" android:textColor="#000000"/>
<Button
android:id="@+id/pickDate"
android:layout_width="324dp"
android:layout_height="wrap_content"
android:text="Change the date"/>
<TextView
android:text="Enter Enter Current Weight (Kg)"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge" android:textColor="#00000F">
</TextView>
<EditText
android:id="@+id/cweight"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal" >
<requestFocus></requestFocus>
</EditText>
<TextView android:text="Enter Desired Weight(kg)"
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textStyle="bold" android:textColor="#00000F"></TextView>
<EditText
android:id="@+id/nweight"
android:layout_width="320dp"
android:layout_height="wrap_content"
android:inputType="numberDecimal" >