Android:ArrayAdapter通过函数将TextView日期设置为相同

我正在制作聊天应用程序，我创建了这个ArrayAdapter 包裹助理

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.Calendar;
import java.util.HashMap;
import java.util.List;

import als.chaterix.R;

/**
 * Created by arl on 27-Jan-15.
 */
public class ChatAdapter extends ArrayAdapter<String> {
    private final Context context;
    private final List values;

    public ChatAdapter(Context context, List values) {
        super(context, R.layout.messagelayout, values);
        this.context = context;
        this.values = values;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View rowView = inflater.inflate(R.layout.messagelayout, parent, false);
        TextView sender = (TextView) rowView.findViewById(R.id.user);
        TextView date = (TextView) rowView.findViewById(R.id.date);
        TextView messa = (TextView)rowView.findViewById(R.id.message);
        sender.setText(((HashMap<String, String>)values.get(position)).get("user_id"));
        ShortcutFunc sf = new ShortcutFunc(this.context);

        try{
        date.setText(sf.FormatDate(((HashMap<String, String>)values.get(position)).get("time")));
        }catch(Exception e){
            Log.d("AdapterTimeError", e.toString());
        }

        messa.setText(((HashMap<String, String>) values.get(position)).get("message"));
        return rowView;
    }
}

照片：

 Log.d("StackOverflow", ((HashMap<String, String>)values.get(position)).get("time"));

SimpleDataFormat sdf=新的SimpleDataFormat（“yyy-MM-dd-hh:MM:ss”）缺少一个“y”（yyyy）

在<代码>道岔中=sdf1.格式（日期）：参数应为

date2

（日期对象）

您的listview在滚动时会像地狱一样滞后，因为您没有回收视图。检查

convertView！=空

并使用

ViewHolder

您应该考虑使用<代码> CurryVIEW < /C> >而不是<代码> ListVIEW

Today

有效吗？：我的意思是：

if（c.getTime（）.equals（new java.util.Date（））

因为new Date（）在调用发生时创建了一个当前毫秒的新日期对象。如果您今天在12:51:39调用它，date对象将不等于五秒钟后创建的date对象

昨天.add（日历.DAY\u/u月-1）：这不是昨天，这是一个月前

您确定/已调试/打印到logcat的值吗

（（HashMap）values.get（position））.get（“time”）

，只是为了确保该值与前一个值不同

---

使用

SimpleDateFormat

并应用

DateFormat

您喜欢的任何内容。我正在使用它，但我在许多地方使用它，因此我决定创建函数以供重用。

FormatDate（）

thows该异常。

IllegalArgumentException

在何处（第行）引发？你能在

中发布stacktrace吗？试试{date.setText（…）}catch（异常e）{e.printStacktrace（）；}

@sockeqwe我已经用stacktrace更新了这个问题。它来自适配器类中的Try-and-Catch。我已经更新了我的答案。

SimpleDateFormat

中缺少一个

y

，它从过去输入日期，并将其用作今天，就像五分钟前可能发生的事情一样，也是一个月中的一天，不是吗？大概是01-31号吧？我不明白你的意思。您可以只打印

（（HashMap）values.get（position））.get（“time”）的值吗

public String FormatDate(String date) throws ParseException {
    String turnOut = null;
    SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd hh:mm:ss");
    java.util.Date date2 = sdf.parse(date);

    Calendar c = Calendar.getInstance();
    c.setTime(date2);
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE,0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND,0);
    Calendar yesterday = Calendar.getInstance();
    yesterday.add(Calendar.DAY_OF_MONTH, -1);
    yesterday.set(Calendar.HOUR_OF_DAY,0);
    yesterday.set(Calendar.MINUTE,0);
    yesterday.set(Calendar.SECOND,0);
    yesterday.set(Calendar.MILLISECOND,0);

    if (c.getTime().equals(new java.util.Date())){
        turnOut = "Today";
    } else if (c.equals(yesterday)) {
        turnOut = "Yesterday";
    } else {
        SimpleDateFormat sdf1 = new SimpleDateFormat("dd-MM-yyyy hh:mm");
        turnOut  = sdf1.format(date);
    }
    return turnOut;
}

 Log.d("StackOverflow", ((HashMap<String, String>)values.get(position)).get("time"));

> 01-27 14:15:43.664  25244-25244/als.chaterix W/System.err﹕
> java.lang.IllegalArgumentException: Bad class: class java.lang.String
> 01-27 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> java.text.DateFormat.format(DateFormat.java:296) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> java.text.Format.format(Format.java:93) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> helpers.ShortcutFunc.FormatDate(ShortcutFunc.java:120) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> helpers.ChatAdapter.getView(ChatAdapter.java:44) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.AbsListView.obtainView(AbsListView.java:2255) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.ListView.makeAndAddView(ListView.java:1790) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.ListView.fillUp(ListView.java:725) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.ListView.correctTooHigh(ListView.java:1414) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.ListView.fillSpecific(ListView.java:1352) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.ListView.layoutChildren(ListView.java:1620) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.AbsListView.onLayout(AbsListView.java:2087) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
> 01-27 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
> 01-27 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.664  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.664 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.widget.FrameLayout.onLayout(FrameLayout.java:388) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.View.layout(View.java:14841) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewGroup.layout(ViewGroup.java:4631) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1986) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1743)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:996) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5603)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.Choreographer.doCallbacks(Choreographer.java:574) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.Choreographer.doFrame(Choreographer.java:544) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> android.os.Handler.handleCallback(Handler.java:733) 01-27 14:15:43.674
> 25244-25244/als.chaterix W/System.err﹕ at
> android.os.Handler.dispatchMessage(Handler.java:95) 01-27 14:15:43.674
> 25244-25244/als.chaterix W/System.err﹕ at
> android.os.Looper.loop(Looper.java:136) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> android.app.ActivityThread.main(ActivityThread.java:5146) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> java.lang.reflect.Method.invokeNative(Native Method) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> java.lang.reflect.Method.invoke(Method.java:515) 01-27 14:15:43.674 
> 25244-25244/als.chaterix W/System.err﹕ at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
> 01-27 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612) 01-27
> 14:15:43.674  25244-25244/als.chaterix W/System.err﹕ at
> dalvik.system.NativeStart.main(Native Method)