I'm pretty sure this isn't the cause of the problem, but I am curious why your XML file has your button set to not be clickable... Seems odd since you are trying to click that buttong... ---------------------------------------------------------------------- There are only 10 types of people in the world... Those who know binary and those who don't. ----------------------------------------------------------------------
On Tue, Nov 3, 2009 at 7:29 PM, 大方 <[email protected]> wrote: > Hello,guys! > I encountered a problem while I run the application below.The UI can > appear in the emulator screen normally,but while I click the button > the bug appears.Below I attach the source and the logcat: > > > the source code: > > HelloDatePicker.java > > package HelloDatePicker.pkg; > import java.util.Calendar; > import android.app.Activity; > import android.app.DatePickerDialog; > import android.app.Dialog; > import android.os.Bundle; > import android.view.View; > import android.widget.Button; > import android.widget.DatePicker; > import android.widget.TextView; > > public class HelloDatePickerAct extends Activity { > /** Called when the activity is first created. */ > private TextView mDateDisplay; > private Button mPickDate; > private int mYear; > private int mMonth; > private int mDay; > static final int DATE_DIALOG_ID=0x00000000; > > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > > //capture our View elements > mDateDisplay=(TextView)findViewById(R.id.DateDisplay); > mPickDate=(Button)findViewById(R.id.PickDate); > > > //get the current date > final Calendar c=Calendar.getInstance(); > mYear=c.get(Calendar.YEAR); > mMonth=c.get(Calendar.MONTH); > mDay=c.get(Calendar.DAY_OF_MONTH); > > //display the current date > updateDisplay(); > > > //add a click listener to the button > mPickDate.setOnClickListener(new View.OnClickListener() { > > @Override > public void onClick(View v) { > // TODO Auto-generated method stub > showDialog(DATE_DIALOG_ID); > } > }); > } > > protected Dialog OnCreateDialog(int id){ > switch(id){ > case DATE_DIALOG_ID: > return new DatePickerDialog > (this,mDateSetListener,mYear,mMonth,mDay); > } > return null; > } > //updates the date we display in the TextView > private void updateDisplay() > { > mDateDisplay.setText(new StringBuilder() > //Month is 0 based so add 1 > .append(mMonth+1).append("-") > .append(mDay).append("-") > .append(mYear).append(" ")); > } > > // the callback received when the user "sets" the date in the dialog > 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(); > } > }; > > } > > > main.xml > > <?xml version="1.0" encoding="utf-8"?> > > <LinearLayout android:id="@+id/LinearLayout01" > android:layout_width="fill_parent" android:layout_height="fill_parent" > xmlns:android="http://schemas.android.com/apk/res/android"; > android:orientation="vertical"> > <TextView android:layout_width="wrap_content" > android:layout_height="wrap_content" android:id="@+id/DateDisplay" > android:editable="false"></TextView> > <Button android:layout_width="wrap_content" > android:layout_height="wrap_content" android:id="@+id/PickDate" > android:text="Change the date" android:clickable="false"></Button> > </LinearLayout> > > > > > I debug step by step and while debugging at the breakpoint > onClick,the logcat appears as below: > 11-04 01:15:03.152: ERROR/AndroidRuntime(809): Uncaught handler: > thread main exiting due to uncaught exception > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): > java.lang.IllegalArgumentException: Activity#onCreateDialog did not > create a dialog for id 0 > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.app.Activity.createDialog(Activity.java:869) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.app.Activity.showDialog(Activity.java:2408) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > HelloDatePicker.pkg.HelloDatePickerAct$2.onClick > (HelloDatePickerAct.java:49) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.View.performClick(View.java:2344) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.View.onTouchEvent(View.java:4133) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.widget.TextView.onTouchEvent(TextView.java:6504) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.View.dispatchTouchEvent(View.java:3672) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > com.android.internal.policy.impl.PhoneWindow > $DecorView.superDispatchTouchEvent(PhoneWindow.java:1712) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent > (PhoneWindow.java:1202) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.app.Activity.dispatchTouchEvent(Activity.java:1987) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > com.android.internal.policy.impl.PhoneWindow > $DecorView.dispatchTouchEvent(PhoneWindow.java:1696) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.view.ViewRoot.handleMessage(ViewRoot.java:1658) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.os.Handler.dispatchMessage(Handler.java:99) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.os.Looper.loop(Looper.java:123) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > android.app.ActivityThread.main(ActivityThread.java:4203) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > java.lang.reflect.Method.invokeNative(Native Method) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > java.lang.reflect.Method.invoke(Method.java:521) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run > (ZygoteInit.java:791) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) > 11-04 01:15:03.180: ERROR/AndroidRuntime(809): at > dalvik.system.NativeStart.main(Native Method) > 11-04 01:15:03.220: ERROR/dalvikvm(809): Unable to open stack trace > file '/data/anr/traces.txt': Permission denied > > > > From the logcat,I guess it is the ID problem,but I don't know how to > use it correctly and I can't get any help from the sdk docs,please > help! > > I have another question about '11-04 01:15:03.220: ERROR/dalvikvm > (809): Unable to open stack trace file '/data/anr/traces.txt': > Permission denied' ,how to do with it? > > 3Q! > > > > > > -- > You received this message because you are subscribed to the Google > Groups "Android Beginners" group. > To post to this group, send email to [email protected] > To unsubscribe 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