MainActivity.java
package com.example.desperado.sunshine;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String[] data = {
"Mon 6/23 - Sunny - 31/17",
"Tue 6/24 - Foggy - 21/8",
"Wed 6/25 - Cloudy - 22/17",
"Thurs 6/26 - Rainy - 18/11",
"Fri 6/27 - Foggy - 21/10",
"Sat 6/28 - TRAPPED IN WEATHERSTATION - 23/18",
"Sun 6/29 - Sunny - 20/7"
};
List<String> weekForecast = new ArrayList<String>(Arrays.asList(data));
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
}
fragment_main.xml
<FrameLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.android.sunshine.app.MainActivity$PlaceholderFragment">
<ListView
android:id="@+id/listview_forecast"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
list_item_forecast.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?android:attr/listPreferredItemHeight"
android:gravity="center_vertical"
android:id="@+id/list_item_forecast_textview" />
logcat的
>02-14 00:55:05.840 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ Not late-enabling CheckJNI (already on)
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine W/dalvikvm﹕ VFY: unable to resolve virtual method 11345: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine W/dalvikvm﹕ VFY: unable to resolve virtual method 11351: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
>02-14 00:55:05.890 1814-1814/com.example.desperado.sunshine W/dalvikvm﹕ VFY: unable to resolve virtual method 9039: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine W/dalvikvm﹕ VFY: unable to resolve virtual method 364: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine W/dalvikvm﹕ VFY: unable to resolve virtual method 386: Landroid/content/res/TypedArray;.getType (I)I
>02-14 00:55:05.900 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
>02-14 00:55:05.910 1814-1814/com.example.desperado.sunshine D/dalvikvm﹕ GC_FOR_ALLOC freed 147K, 8% free 3069K/3324K, paused 3ms, total 4ms
>02-14 00:55:05.910 1814-1814/com.example.desperado.sunshine I/dalvikvm-heap﹕ Grow heap (frag case) to 4.173MB for 1127532-byte allocation
>02-14 00:55:05.930 1814-1823/com.example.desperado.sunshine D/dalvikvm﹕ GC_FOR_ALLOC freed 13K, 7% free 4157K/4428K, paused 19ms, total 19ms
>02-14 00:55:05.980 1814-1814/com.example.desperado.sunshine D/﹕ HostConnection::get() New Host Connection established 0xb7dcf7d0, tid 1814
>02-14 00:55:06.000 1814-1814/com.example.desperado.sunshine W/EGL_emulation﹕ eglSurfaceAttrib not implemented
>02-14 00:55:06.000 1814-1814/com.example.desperado.sunshine D/OpenGLRenderer﹕ Enabling debug mode 0
答案 0 :(得分：0)
当然是空的，你显示一个没有任何物品的空ListView。你能指望什么 ？您必须将适配器传递给ListView并做一些工作以查看listView，请完成此http://www.vogella.com/tutorials/AndroidListView/article.html