Question

我正在尝试使用此代码，这是从https://gist.github.com/2383248获取的一个示例，但它在公共void上发现错误onClick

此行有多个标记 - 实现android.view.View.OnClickListener.onClick - 语法错误，插入“}”来完成MethodBody，但是当我添加大括号时，它会在多次尝试后抛出另一个错误，并且会出现不同的建议和想法。

这可能是语法错误和我编写的错误（刚刚开始学习编程），但是有没有人有任何想法如何解决这个问题或者指出我正确的方向我会非常感激。

 public class ICSCalendarActivity extends Activity implements View.OnClickListener{

Button button1;

int year1;  
int month1;  
int day1;
int ShiftPattern;


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



    button1 = (Button)findViewById(R.id.openButton);     
    button1.setText("open");   
    button1.setOnClickListener(this);

    Bundle extras = getIntent().getExtras(); 

    year1 = extras.getInt("year1"); 
    day1 = extras.getInt("day1"); 
    month1 = extras.getInt("month1");

    ShiftPattern = extras.getInt("ShiftPattern");
}

public void onClick(View v){

private static void addToCalendar(Context ICSCalendarActivity, final String title, final long dtstart, final long dtend) {
    final ContentResolver cr = ICSCalendarActivity.getContentResolver();
    Cursor cursor ;
    if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
        cursor = cr.query(Uri.parse("content://com.android.calendar/calendars"), new String[]{ "_id", "displayname" }, null, null, null);
    else
        cursor = cr.query(Uri.parse("content://calendar/calendars"), new String[]{ "_id", "displayname" }, null, null, null);
    if ( cursor.moveToFirst() ) {
        final String[] calNames = new String[cursor.getCount()];
        final int[] calIds = new int[cursor.getCount()];
        for (int i = 0; i < calNames.length; i++) {
            calIds[i] = cursor.getInt(0);
            calNames[i] = cursor.getString(1);
            cursor.moveToNext();
        }

        AlertDialog.Builder builder = new AlertDialog.Builder(ICSCalendarActivity);
        builder.setSingleChoiceItems(calNames, -1, new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                ContentValues cv = new ContentValues();
                cv.put("calendar_id", calIds[which]);
                cv.put("title", title);
                cv.put("dtstart", dtstart );
                cv.put("hasAlarm", 1);
                cv.put("dtend", dtend);

                Uri newEvent ;
                if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
                    newEvent = cr.insert(Uri.parse("content://com.android.calendar/events"), cv);
                else
                    newEvent = cr.insert(Uri.parse("content://calendar/events"), cv);

                if (newEvent != null) {
                    long id = Long.parseLong( newEvent.getLastPathSegment() );
                    ContentValues values = new ContentValues();
                    values.put( "event_id", id );
                    values.put( "method", 1 );
                    values.put( "minutes", 15 ); // 15 minutes
                    if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
                        cr.insert( Uri.parse( "content://com.android.calendar/reminders" ), values );
                    else
                        cr.insert( Uri.parse( "content://calendar/reminders" ), values );

                }
                dialog.cancel();
            }

        });

        builder.create().show();
    }
    cursor.close();
}    }

谢谢。

Answer 1

static函数中无法使用 addToCalendar 方法定义onClick。

public class ICSCalendarActivity extends Activity implements View.OnClickListener{

Button button1;

int year1;  
int month1;  
int day1;
int ShiftPattern;


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



    button1 = (Button)findViewById(R.id.openButton);     
    button1.setText("open");   
    button1.setOnClickListener(this);

    Bundle extras = getIntent().getExtras(); 

    year1 = extras.getInt("year1"); 
    day1 = extras.getInt("day1"); 
    month1 = extras.getInt("month1");

    ShiftPattern = extras.getInt("ShiftPattern");
}

public void onClick(View v){
      addToCalendar(mContext, mString, mlong,  mlong); // pass the parameters of the addToCalendar method here 
      }

private static void addToCalendar(Context ICSCalendarActivity, final String title, final long dtstart, final long dtend) {
    final ContentResolver cr = ICSCalendarActivity.getContentResolver();
    Cursor cursor ;
    if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
        cursor = cr.query(Uri.parse("content://com.android.calendar/calendars"), new String[]{ "_id", "displayname" }, null, null, null);
    else
        cursor = cr.query(Uri.parse("content://calendar/calendars"), new String[]{ "_id", "displayname" }, null, null, null);
    if ( cursor.moveToFirst() ) {
        final String[] calNames = new String[cursor.getCount()];
        final int[] calIds = new int[cursor.getCount()];
        for (int i = 0; i < calNames.length; i++) {
            calIds[i] = cursor.getInt(0);
            calNames[i] = cursor.getString(1);
            cursor.moveToNext();
        }

        AlertDialog.Builder builder = new AlertDialog.Builder(ICSCalendarActivity);
        builder.setSingleChoiceItems(calNames, -1, new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                ContentValues cv = new ContentValues();
                cv.put("calendar_id", calIds[which]);
                cv.put("title", title);
                cv.put("dtstart", dtstart );
                cv.put("hasAlarm", 1);
                cv.put("dtend", dtend);

                Uri newEvent ;
                if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
                    newEvent = cr.insert(Uri.parse("content://com.android.calendar/events"), cv);
                else
                    newEvent = cr.insert(Uri.parse("content://calendar/events"), cv);

                if (newEvent != null) {
                    long id = Long.parseLong( newEvent.getLastPathSegment() );
                    ContentValues values = new ContentValues();
                    values.put( "event_id", id );
                    values.put( "method", 1 );
                    values.put( "minutes", 15 ); // 15 minutes
                    if (Integer.parseInt(Build.VERSION.SDK) >= 8 )
                        cr.insert( Uri.parse( "content://com.android.calendar/reminders" ), values );
                    else
                        cr.insert( Uri.parse( "content://calendar/reminders" ), values );

                }
                dialog.cancel();
            }

        });

        builder.create().show();
    }
    cursor.close();
}

Answer 2

您无法在另一个方法中定义方法。在您的代码中，您已在onClick（）方法中定义了 addToCalendar（）方法。而是在外部定义方法并从onClick（）方法调用它。

public void onClick(View v)
{
     addTocalender(context, string, longVal1,  longVal2);
}

private static void addToCalendar(Context ICSCalendarActivity,
        final String title, final long dtstart, final long dtend)
{
 ....
 ....
}

这段代码有问题吗？

2 个答案: