Question

package com.example.dennis.sunshine.app;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


/**
 * A placeholder fragment containing a simple view.
 */
public class MainActivityFragment extends Fragment {

    public MainActivityFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_main, container, false);


        String[] forecastArray = {
        "Today - Sunny - 88 / 63",
        "Tomorrow - Foggy - 70 / 46",
        "Weds - Cloudy - 72 / 63",
        "Thurs - Rainy - 64 / 51",
        "Fri - Foggy - 70 / 46",
        "Sat - Sunny - 76 / 68"
        };

        List<String> weekForecast = new ArrayList<String>(Arrays.asList(forecastArray));
    }
}

我正在尝试按照 IDE 上创建ArrayList的教程，但我偶然发现了一个错误显示在String [] forecastArray = .....};说'无法到达的声明'。

Answer 1

您的方法将在此行结束（请注意Array [ ]语句）：

return

该行之后的任何内容都无法访问，换句话说，永远无法执行。

Answer 2

返回return语句后，返回语句后没有执行其他代码。

尝试在返回之前移动逻辑。

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        String[] forecastArray = {
        "Today - Sunny - 88 / 63",
        "Tomorrow - Foggy - 70 / 46",
        "Weds - Cloudy - 72 / 63",
        "Thurs - Rainy - 64 / 51",
        "Fri - Foggy - 70 / 46",
        "Sat - Sunny - 76 / 68"
        };

        List<String> weekForecast = new ArrayList<String>(Arrays.asList(forecastArray));

        return inflater.inflate(R.layout.fragment_main, container, false);

 }

数组字符串中无法访问的语句

2 个答案: