Android Java Time Picker Dialog

hey I am trying to make a TimepickerDialog. But the app crashes soon as I press the Set Time button. Here is the code. MainActivity: package com.wifitimer; import java.text.DateFor

Solution 1:

I think you are calling chooseTime() from your xml layout file onClick attribute you need to change method signature to this

publicvoidchooseTime(View view){

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

}

Solution 2:

change method like

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

and in You xml Control Like

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

Solution 3:

For showing TimepickerDialog, there's no need to add any type of permission.

mainActivity.java

publicclassMainActivityextendsActivity {
     Button b1;
     staticfinalintTIME_OPENDIALOG_ID=0;
     privateint mHour,mMinute;
    @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        b1=(Button)findViewById(R.id.b1);
        b1.setOnClickListener(newOnClickListener()
        {

            @OverridepublicvoidonClick(View arg0) {
                // TODO Auto-generated method stub
                showDialog(TIME_OPENDIALOG_ID);
                updateDisplay();
            }

        });
    }
    private TimePickerDialog.OnTimeSetListenermopenSetListener=newTimePickerDialog.OnTimeSetListener() {
        publicvoidonTimeSet(TimePicker view, int hourOfDay, int minute) {
            mHour = hourOfDay;
            mMinute = minute;
            updateDisplay();
        }
    };
    private Object pad(int mMinute2) {
        if (mMinute2 >= 10)
            return String.valueOf(mMinute2);
        elsereturn"0" + String.valueOf(mMinute2);
    }
    privatevoidupdateDisplay() {
        b1.setText(newStringBuilder().append(pad(mHour)).append(":")
                .append(pad(mMinute)));

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

        }
        returnnull;
    }
}

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>