錯誤：構造函數意圖未定義

Question

我正在嘗試研究如何開發我的第一個應用程序但是eclipse在我嘗試編譯此代碼時返回錯誤“構造函數意圖未定義”：

package com.baruckis.SlidingMenuImplementation.FromClass;
import android.app.Activity;
import android.content.Intent;
import android.widget.Toast;

import com.baruckis.SlidingMenuImplementation.R;
import com.baruckis.SlidingMenuImplementation.SlidingMenuListItem;
import com.baruckis.SlidingMenuImplementation.prova;

import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu;

public class SlidingMenuBuilderBase {
    protected Activity activity;
protected SlidingMenu menu = null;

public void createSlidingMenu(Activity activity) {
    this.activity = activity;
    menu = new SlidingMenu(activity);
    menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
    menu.setShadowWidthRes(R.dimen.sliding_menu_shadow_width);
    menu.setShadowDrawable(R.drawable.sliding_menu_shadow);
    menu.setBehindOffsetRes(R.dimen.sliding_menu_offset);
    menu.setFadeDegree(0.35f);
    menu.attachToActivity(activity, SlidingMenu.SLIDING_WINDOW);
    menu.setMenu(R.layout.sliding_menu_frame);

    SlidingMenuListFragment slidingMenuListFragment = new SlidingMenuListFragment();
    slidingMenuListFragment.setMenuBuilder(this);


    activity.getFragmentManager().beginTransaction()
            .replace(R.id.sliding_menu_frame, slidingMenuListFragment)
            .commit();
}

public SlidingMenu getSlidingMenu() {
    return menu;
}


public void onListItemClick(SlidingMenuListItem selectedSlidingMenuListItem) {
    CharSequence text;
    switch (selectedSlidingMenuListItem.Id) {
    case R.slidingmenu.list_item_municipio_id:
    Intent ii = new Intent(this, prova.class);
    startActivity(ii);
    finish();

        break;
    case R.slidingmenu.list_item_basic_id:
        text = "Clicked item “"
                + selectedSlidingMenuListItem.Name
                + "”. "
                + activity
                        .getString(R.string.toast_sliding_menu_custom_action);
        Toast.makeText(activity, text, Toast.LENGTH_LONG).show();
        break;
    default:
        text = "Clicked item. "
                + activity
                        .getString(R.string.toast_sliding_menu_no_action_default);
        Toast.makeText(activity, text, Toast.LENGTH_LONG).show();
        break;
    }
}

}

我已經嘗試在其他線程中尋找解決方案，但我沒有找到適合我的方法！

Answer 1

更改

Intent ii = new Intent(this, prova.class);

至

Intent ii = new Intent(activity, prova.class);

您需要一個Activity Context來啟動Activity並且由於您的類沒有擴展Activity您需要使用傳遞給它的activity參數

Answer 2

那是因為SlidingMenuBuilderBase不是Context ，就像Activity一樣。 既然你持有到一個Activity的實例activity數據成員，可以取代this在Intent與構造activity 。