如何为 Arraylist Listactivity 设置自定义字体 [英] How to set a custom font for Arraylist Listactivity

问题描述

所以我搜索并发现我需要创建一个自定义数组适配器来更改列表视图活动的字体.我的列表活动由一个数组列表组成.所以我这样做了

So i searched and found out that i need to create a custom array adapter to change the font of a listview activity. My list activity consists of an arraylist. So i did as such

public class CustomArrayAdapter extends ArrayAdapter <String> {

private Typeface tf;
private LayoutInflater inflater;
private int resource;
private int textViewResourceId;
private ArrayList<String> objects;

public CustomArrayAdapter(Context context, int resource, int textViewResourceId,
        ArrayList<String> favorites, Typeface tf) {
    super(context, resource, textViewResourceId, favorites);
    this.tf = tf;
    this.resource = resource;
    this.textViewResourceId = textViewResourceId;
    this.objects = favorites;
    inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}



@Override
public View getView(int position, View convertView, ViewGroup parent) {

    if (convertView == null) {
        convertView = inflater.inflate(resource, parent, false);    
    }

    TextView text = (TextView) convertView.findViewById(textViewResourceId);
    text.setTypeface(tf);

    return convertView;
}

}

这是我的 Listactivity

and here is my Listactivity

public class Favorites extends ListActivity  {

public static ArrayList<String> favorites = new ArrayList<String>();
public static final String PREFS_NAME ="SAVEDATA";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);



     Typeface cFont = Typeface.createFromAsset(getAssets(), "annoyingkettle.ttf");

     setListAdapter(new CustomArrayAdapter(this, android.R.layout.simple_list_item_1, R.id.ListView01, favorites, cFont));

这不起作用，我不知道为什么.当我尝试打开它时，我的 listactivity 崩溃了.我该如何解决这个问题?

This doesnt work, i dont know why. My listactivity crashes when i try to open it. How can i fix this?

这是我的 xml

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/ListView01" >

这是 LogCat

    '09-18 02:36:16.036: E/Trace(15562): error opening trace file: No such file or directory (2)
09-18 02:36:17.486: D/dalvikvm(15562): GC_FOR_ALLOC freed 73K, 7% free 2655K/2848K, paused 251ms, total 287ms
09-18 02:36:17.539: I/dalvikvm-heap(15562): Grow heap (frag case) to 3.781MB for 1127536-byte allocation
09-18 02:36:17.826: D/dalvikvm(15562): GC_FOR_ALLOC freed 2K, 5% free 3754K/3952K, paused 274ms, total 274ms
09-18 02:36:18.066: D/dalvikvm(15562): GC_CONCURRENT freed <1K, 5% free 3769K/3952K, paused 5ms+13ms, total 224ms
09-18 02:36:18.316: D/gralloc_goldfish(15562): Emulator without GPU emulation detected.
09-18 02:36:24.436: D/AndroidRuntime(15562): Shutting down VM
09-18 02:36:24.436: W/dalvikvm(15562): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
09-18 02:36:24.588: E/AndroidRuntime(15562): FATAL EXCEPTION: main
09-18 02:36:24.588: E/AndroidRuntime(15562): java.lang.NullPointerException
09-18 02:36:24.588: E/AndroidRuntime(15562):    at com.mkaya.ultimatejokescollection.CustomArrayAdapter.getView(CustomArrayAdapter.java:41)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.AbsListView.obtainView(AbsListView.java:2159)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.ListView.makeAndAddView(ListView.java:1831)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.ListView.fillDown(ListView.java:674)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.ListView.fillFromTop(ListView.java:735)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.ListView.layoutChildren(ListView.java:1652)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.AbsListView.onLayout(AbsListView.java:1994)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.View.layout(View.java:14008)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewGroup.layout(ViewGroup.java:4373)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.View.layout(View.java:14008)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewGroup.layout(ViewGroup.java:4373)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.View.layout(View.java:14008)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewGroup.layout(ViewGroup.java:4373)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.View.layout(View.java:14008)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewGroup.layout(ViewGroup.java:4373)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.Choreographer.doCallbacks(Choreographer.java:562)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.Choreographer.doFrame(Choreographer.java:532)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.os.Handler.handleCallback(Handler.java:725)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.os.Looper.loop(Looper.java:137)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at android.app.ActivityThread.main(ActivityThread.java:5041)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at java.lang.reflect.Method.invokeNative(Native Method)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at java.lang.reflect.Method.invoke(Method.java:511)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
09-18 02:36:24.588: E/AndroidRuntime(15562):    at dalvik.system.NativeStart.main(Native Method)
09-18 02:36:27.846: I/Process(15562): Sending signal. PID: 15562 SIG: 9

'

推荐答案

检查你的 TextView text = (TextView) convertView.findViewById(textViewResourceId); 是否为空.

Check if your TextView text = (TextView) convertView.findViewById(textViewResourceId); is not null.

尝试改变

setListAdapter(new CustomArrayAdapter(this, android.R.layout.simple_list_item_1, R.id.ListView01, 收藏夹, cFont));

到

setListAdapter(new CustomArrayAdapter(this, android.R.layout.simple_list_item_1, android.R.id.text1, 收藏夹, cFont));

这篇关于如何为 Arraylist Listactivity 设置自定义字体的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！