Android Java Picker Dialog

Question

эй, я пытаюсь сделать TimepickerDialog. Но приложение быстро сработает, когда я нажимаю кнопку Set Time. Вот код.

MainActivity:

package com.wifitimer; 
import java.text.DateFormat; 
import java.util.Calendar; 
import android.app.Activity; 
import android.app.TimePickerDialog; 
import android.os.Bundle; 
import android.widget.TimePicker; 

public class MainActivity extends Activity { 
DateFormat formatDateTime=DateFormat.getDateTimeInstance(); 
Calendar dateTime=Calendar.getInstance(); 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
} 

public void chooseTime(){ 
    new TimePickerDialog(this, t, dateTime.get(Calendar.HOUR_OF_DAY), dateTime.get(Calendar.MINUTE), true).show(); 
} 

TimePickerDialog.OnTimeSetListener t = new TimePickerDialog.OnTimeSetListener() { 
    @Override 
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
     dateTime.set(Calendar.HOUR_OF_DAY, hourOfDay); 
     dateTime.set(Calendar.MINUTE,minute); 
    } 
}; 
} 

Am I отсутствуют некоторые разрешения или что-нибудь?

Вот LogCat по запросу:

04-15 13:42:24.564: D/libEGL(31887): loaded /system/lib/egl/libEGL_mali.so 
04-15 13:42:24.589: D/libEGL(31887): loaded /system/lib/egl/libGLESv1_CM_mali.so 
04-15 13:42:24.594: D/libEGL(31887): loaded /system/lib/egl/libGLESv2_mali.so 
04-15 13:42:24.599: D/(31887): Device driver API match 
04-15 13:42:24.599: D/(31887): Device driver API version: 10 
04-15 13:42:24.599: D/(31887): User space API version: 10 
04-15 13:42:24.599: D/(31887): mali: REVISION=Linux-r2p4-02rel0 BUILD_DATE=Tue Oct 16 15:37:13 KST 2012 
04-15 13:42:24.654: D/OpenGLRenderer(31887): Enabling debug mode 0 
04-15 13:42:28.524: D/AndroidRuntime(31887): Shutting down VM 
04-15 13:42:28.524: W/dalvikvm(31887): threadid=1: thread exiting with uncaught exception (group=0x416922a0) 
04-15 13:42:28.544: E/AndroidRuntime(31887): FATAL EXCEPTION: main 
04-15 13:42:28.544: E/AndroidRuntime(31887): java.lang.IllegalStateException: Could not find a method chooseTime(View) in the activity class com.wifitimer.MainActivity for onClick handler on view class android.widget.Button with id 'timeBtn' 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.view.View$1.onClick(View.java:3678) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.view.View.performClick(View.java:4211) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.view.View$PerformClick.run(View.java:17267) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.os.Handler.handleCallback(Handler.java:615) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.os.Handler.dispatchMessage(Handler.java:92) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.os.Looper.loop(Looper.java:137) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.app.ActivityThread.main(ActivityThread.java:4898) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at java.lang.reflect.Method.invokeNative(Native Method) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at java.lang.reflect.Method.invoke(Method.java:511) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at dalvik.system.NativeStart.main(Native Method) 
04-15 13:42:28.544: E/AndroidRuntime(31887): Caused by: java.lang.NoSuchMethodException: chooseTime [class android.view.View] 
04-15 13:42:28.544: E/AndroidRuntime(31887): at java.lang.Class.getConstructorOrMethod(Class.java:460) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at java.lang.Class.getMethod(Class.java:915) 
04-15 13:42:28.544: E/AndroidRuntime(31887): at android.view.View$1.onClick(View.java:3671) 
04-15 13:42:28.544: E/AndroidRuntime(31887): ... 11 more 

Благодаря

Answer 1

Я думаю, что вы звоните chooseTime() из XML-файл макета OnClick атрибут, необходимо изменить метод подписи к этому

public void chooseTime(View view){ 

    new TimePickerDialog(this, t, dateTime.get(Calendar.HOUR_OF_DAY), dateTime.get(Calendar.MINUTE), true).show(); 

} 

Answer 2

способ изменения как

public void chooseTime(View view){ 
    new TimePickerDialog(this, t, dateTime.get(Calendar.HOUR_OF_DAY), dateTime.get(Calendar.MINUTE), true).show(); 
} 

и у вас xml Control Как

<ImageButton 
     android:id="@+id/imagestart" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:onClick="chooseTime" 
     android:src="@drawable/ic_launcher" /> 

Answer 3

для показа TimepickerDialog, нет необходимости добавлять любой тип разрешения.

mainActivity.java

public class MainActivity extends Activity { 
    Button b1; 
    static final int TIME_OPENDIALOG_ID = 0; 
    private int mHour,mMinute; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     b1=(Button)findViewById(R.id.b1); 
     b1.setOnClickListener(new OnClickListener() 
     { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 
       showDialog(TIME_OPENDIALOG_ID); 
       updateDisplay(); 
      } 

     }); 
    } 
    private TimePickerDialog.OnTimeSetListener mopenSetListener = new TimePickerDialog.OnTimeSetListener() { 
     public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
      mHour = hourOfDay; 
      mMinute = minute; 
      updateDisplay(); 
     } 
    }; 
    private Object pad(int mMinute2) { 
     if (mMinute2 >= 10) 
      return String.valueOf(mMinute2); 
     else 
      return "0" + String.valueOf(mMinute2); 
    } 
    private void updateDisplay() { 
     b1.setText(new StringBuilder().append(pad(mHour)).append(":") 
       .append(pad(mMinute))); 

    } 
    protected Dialog onCreateDialog(int id) { 
     switch (id) { 
     case TIME_OPENDIALOG_ID: 
      return new TimePickerDialog(this, mopenSetListener, mHour, mMinute, 
        false); 

     } 
     return null; 
    } 
} 

main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 

    <Button 
     android:id="@+id/b1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="64dp" 
     android:text="Time" /> 

</RelativeLayout>