java - ListView アイテムのテキストの色を変更するには?

Question

何らかの理由で、アイテムのテキストの色を更新できないようです。ListViewなぜこれが起こっているのか正確にはわかりませんが、誰か考えがありますか？

XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" 
        android:textColor="@android:color/white"
        android:textSize="20sp">

    </ListView>

</RelativeLayout>

ジャワ:

public class MainActivity extends Activity {
    Context context;
    ArrayList<String> aa = new ArrayList<String>();
        ListView lv;
        final String URL = "http://news.google.com";

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            //setContentView(R.layout.activity_main);
            setContentView(R.layout.splash);
            lv= (ListView) findViewById(R.id.listView1);
            new MyTask().execute(URL);
        }

        private class MyTask extends AsyncTask<String, Void, String> {
            ProgressDialog prog;
            String title = "";

            @Override
            protected void onPreExecute() {
                prog = new ProgressDialog(MainActivity.this);
                prog.setMessage("Loading....");
                prog.show();
            }

            @Override
            protected String doInBackground(String... params) {
                try {
                    Document doc = Jsoup.connect(params[0]).get();
                    Element tableHeader = doc.select("tr").first();

                    for (Element element : tableHeader.children()) {
                        aa.add(element.text().toString());
                    }

                    title = doc.title();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                return title;
            }

            @Override
            protected void onPostExecute(String result) {
                super.onPostExecute(result);
                prog.dismiss();
                ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,aa);
                lv.setAdapter(adapter);
            }
        }
    }

編集（Philipp Jahodaの回答に応じて）：

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        prog.dismiss();
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, R.layout.custom_textview, aa);
        setContentView(R.layout.activity_main);
        lv = (ListView) findViewById(R.id.listView1);
        lv.setAdapter(adapter);
    }
}

編集（Philipp Jahodaの回答に応じて）：

custom_textView.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


</LinearLayout>

Logcat (Philipp Jahoda の回答に応じて):

09-19 15:58:57.972: D/dalvikvm(2735): Late-enabling CheckJNI
09-19 15:58:58.063: E/Trace(2735): error opening trace file: No such file or directory (2)
09-19 15:58:58.713: D/libEGL(2735): loaded /system/lib/egl/libEGL_adreno200.so
09-19 15:58:58.723: D/libEGL(2735): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
09-19 15:58:58.723: D/libEGL(2735): loaded /system/lib/egl/libGLESv2_adreno200.so
09-19 15:58:58.723: I/Adreno200-EGL(2735): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB.04.01.01.00.036_msm8960_JB_CL2644550_release_AU (CL2644550)
09-19 15:58:58.723: I/Adreno200-EGL(2735): Build Date: 07/31/12 Tue
09-19 15:58:58.723: I/Adreno200-EGL(2735): Local Branch: 
09-19 15:58:58.723: I/Adreno200-EGL(2735): Remote Branch: quic/master
09-19 15:58:58.723: I/Adreno200-EGL(2735): Local Patches: NONE
09-19 15:58:58.723: I/Adreno200-EGL(2735): Reconstruct Branch: AU_LINUX_ANDROID_JB.04.01.01.00.036 +  NOTHING
09-19 15:58:58.773: D/OpenGLRenderer(2735): Enabling debug mode 0
09-19 15:59:00.785: D/dalvikvm(2735): GC_CONCURRENT freed 4650K, 55% free 5584K/12288K, paused 3ms+3ms, total 74ms
09-19 15:59:00.815: I/dalvikvm(2735): Total arena pages for JIT: 11
09-19 15:59:00.896: I/dalvikvm(2735): Total arena pages for JIT: 12
09-19 15:59:01.196: D/dalvikvm(2735): GC_CONCURRENT freed 1348K, 51% free 6075K/12288K, paused 2ms+6ms, total 32ms
09-19 15:59:01.486: D/dalvikvm(2735): GC_CONCURRENT freed 1360K, 47% free 6558K/12288K, paused 3ms+3ms, total 47ms
09-19 15:59:01.486: D/dalvikvm(2735): WAIT_FOR_CONCURRENT_GC blocked 28ms
09-19 15:59:01.787: D/dalvikvm(2735): GC_CONCURRENT freed 1283K, 43% free 7088K/12288K, paused 2ms+3ms, total 45ms
09-19 15:59:15.251: E/Trace(3080): error opening trace file: No such file or directory (2)
09-19 15:59:15.441: D/libEGL(3080): loaded /system/lib/egl/libEGL_adreno200.so
09-19 15:59:15.441: D/libEGL(3080): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
09-19 15:59:15.441: D/libEGL(3080): loaded /system/lib/egl/libGLESv2_adreno200.so
09-19 15:59:15.441: I/Adreno200-EGL(3080): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB.04.01.01.00.036_msm8960_JB_CL2644550_release_AU (CL2644550)
09-19 15:59:15.441: I/Adreno200-EGL(3080): Build Date: 07/31/12 Tue
09-19 15:59:15.441: I/Adreno200-EGL(3080): Local Branch: 
09-19 15:59:15.441: I/Adreno200-EGL(3080): Remote Branch: quic/master
09-19 15:59:15.441: I/Adreno200-EGL(3080): Local Patches: NONE
09-19 15:59:15.441: I/Adreno200-EGL(3080): Reconstruct Branch: AU_LINUX_ANDROID_JB.04.01.01.00.036 +  NOTHING
09-19 15:59:15.461: D/OpenGLRenderer(3080): Enabling debug mode 0
09-19 15:59:16.943: D/dalvikvm(3080): GC_CONCURRENT freed 4653K, 55% free 5572K/12288K, paused 3ms+4ms, total 26ms
09-19 15:59:17.013: I/dalvikvm(3080): Total arena pages for JIT: 11
09-19 15:59:17.143: I/dalvikvm(3080): Total arena pages for JIT: 12
09-19 15:59:17.223: D/dalvikvm(3080): GC_CONCURRENT freed 1359K, 51% free 6056K/12288K, paused 4ms+2ms, total 47ms
09-19 15:59:17.223: D/dalvikvm(3080): WAIT_FOR_CONCURRENT_GC blocked 25ms
09-19 15:59:17.493: D/dalvikvm(3080): GC_CONCURRENT freed 1345K, 47% free 6553K/12288K, paused 2ms+2ms, total 43ms
09-19 15:59:17.493: D/dalvikvm(3080): WAIT_FOR_CONCURRENT_GC blocked 19ms
09-19 15:59:17.734: D/dalvikvm(3080): GC_CONCURRENT freed 1277K, 43% free 7022K/12288K, paused 2ms+3ms, total 37ms
09-19 15:59:48.897: D/dalvikvm(3080): GC_CONCURRENT freed 4158K, 63% free 4592K/12288K, paused 3ms+2ms, total 33ms
09-19 15:59:48.897: D/dalvikvm(3080): WAIT_FOR_CONCURRENT_GC blocked 19ms
09-19 15:59:49.457: D/dalvikvm(3080): GC_FOR_ALLOC freed 912K, 60% free 4929K/12288K, paused 16ms, total 16ms
09-19 15:59:49.487: D/dalvikvm(3080): GC_CONCURRENT freed 1224K, 55% free 5547K/12288K, paused 2ms+2ms, total 22ms
09-19 15:59:49.487: D/dalvikvm(3080): WAIT_FOR_CONCURRENT_GC blocked 17ms
09-19 15:59:49.718: D/dalvikvm(3080): GC_CONCURRENT freed 1255K, 51% free 6048K/12288K, paused 2ms+7ms, total 33ms
09-19 15:59:49.978: D/dalvikvm(3080): GC_CONCURRENT freed 1366K, 47% free 6525K/12288K, paused 3ms+2ms, total 44ms
09-19 15:59:49.978: D/dalvikvm(3080): WAIT_FOR_CONCURRENT_GC blocked 28ms
09-19 15:59:50.208: D/dalvikvm(3080): GC_CONCURRENT freed 1285K, 44% free 7000K/12288K, paused 4ms+4ms, total 39ms
09-19 15:59:50.458: D/dalvikvm(3080): GC_CONCURRENT freed 4326K, 65% free 4401K/12288K, paused 2ms+2ms, total 34ms
09-19 16:08:02.193: E/Trace(4285): error opening trace file: No such file or directory (2)
09-19 16:08:02.604: D/libEGL(4285): loaded /system/lib/egl/libEGL_adreno200.so
09-19 16:08:02.604: D/libEGL(4285): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
09-19 16:08:02.614: D/libEGL(4285): loaded /system/lib/egl/libGLESv2_adreno200.so
09-19 16:08:02.624: I/Adreno200-EGL(4285): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB.04.01.01.00.036_msm8960_JB_CL2644550_release_AU (CL2644550)
09-19 16:08:02.624: I/Adreno200-EGL(4285): Build Date: 07/31/12 Tue
09-19 16:08:02.624: I/Adreno200-EGL(4285): Local Branch: 
09-19 16:08:02.624: I/Adreno200-EGL(4285): Remote Branch: quic/master
09-19 16:08:02.624: I/Adreno200-EGL(4285): Local Patches: NONE
09-19 16:08:02.624: I/Adreno200-EGL(4285): Reconstruct Branch: AU_LINUX_ANDROID_JB.04.01.01.00.036 +  NOTHING
09-19 16:08:02.644: D/OpenGLRenderer(4285): Enabling debug mode 0
09-19 16:08:07.289: D/dalvikvm(4285): GC_CONCURRENT freed 4685K, 55% free 5576K/12288K, paused 2ms+1ms, total 22ms
09-19 16:08:07.359: I/dalvikvm(4285): Total arena pages for JIT: 11
09-19 16:08:07.359: I/dalvikvm(4285): Total arena pages for JIT: 12
09-19 16:08:07.629: D/dalvikvm(4285): GC_CONCURRENT freed 1345K, 51% free 6064K/12288K, paused 1ms+3ms, total 38ms
09-19 16:08:07.939: D/dalvikvm(4285): GC_CONCURRENT freed 1332K, 47% free 6550K/12288K, paused 2ms+2ms, total 33ms
09-19 16:08:08.220: D/dalvikvm(4285): GC_CONCURRENT freed 1350K, 43% free 7042K/12288K, paused 2ms+3ms, total 54ms
09-19 16:08:08.220: D/dalvikvm(4285): WAIT_FOR_CONCURRENT_GC blocked 28ms
09-19 16:08:08.530: E/ArrayAdapter(4285): You must supply a resource ID for a TextView
09-19 16:08:08.530: D/AndroidRuntime(4285): Shutting down VM
09-19 16:08:08.530: W/dalvikvm(4285): threadid=1: thread exiting with uncaught exception (group=0x41e13300)
09-19 16:08:08.540: E/AndroidRuntime(4285): FATAL EXCEPTION: main
09-19 16:08:08.540: E/AndroidRuntime(4285): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.AbsListView.obtainView(AbsListView.java:2273)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1244)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.ListView.onMeasure(ListView.java:1156)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.View.measure(View.java:15172)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.RelativeLayout.measureChild(RelativeLayout.java:602)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:415)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.View.measure(View.java:15172)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.View.measure(View.java:15172)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:833)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.View.measure(View.java:15172)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4816)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2435)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.View.measure(View.java:15172)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1850)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1102)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1275)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.Choreographer.doCallbacks(Choreographer.java:555)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.Choreographer.doFrame(Choreographer.java:525)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.os.Handler.handleCallback(Handler.java:615)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.os.Handler.dispatchMessage(Handler.java:92)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.os.Looper.loop(Looper.java:137)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.app.ActivityThread.main(ActivityThread.java:4931)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at java.lang.reflect.Method.invokeNative(Native Method)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at java.lang.reflect.Method.invoke(Method.java:511)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
09-19 16:08:08.540: E/AndroidRuntime(4285):     at dalvik.system.NativeStart.main(Native Method)
09-19 16:08:08.540: E/AndroidRuntime(4285): Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView
09-19 16:08:08.540: E/AndroidRuntime(4285):     at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
09-19 16:08:08.540: E/AndroidRuntime(4285):     ... 36 more

score 20 · Accepted Answer

希望のテキストカラーを設定するアイテムのカスタムレイアウトを作成する必要があります。ListView

このように、カスタムアダプターも必要ありません。

例: custom_textview.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tv"
    android:textColor="@color/white"
    android:layout_width="fill_parent"
    android:gravity="center"
    android:layout_height="fill_parent"/>

次に、レイアウトをArrayAdapterで使用できます。

ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, R.layout.custom_textview, aa);
lv.setAdapter(adapter);

score 6 · Accepted Answer

これは、android.R.layout.simple_list_item_1 がデフォルトのテキストの色を使用するためです。これを行う最善の方法は、独自の xml を次のようにすることです。

< TextView
android:id="@android:id/text1"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@android:color/white"
android:textSize="16sp"
/>

score 0 · Accepted Answer

テキストの色を白に変更するだけでよいという同じタスクがありましたが (背景画像が暗いため)、デフォルトの「simple_list_item_1」レイアウトを維持したいと考えています。

上記の回答でレイアウトが台無しになったので、元のレイアウトの xml を検索android:textColor="@android:color/white"し、最後に追加しました。

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceListItemSmall"
    android:gravity="center_vertical"
    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
    android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
    android:paddingRight="?android:attr/listPreferredItemPaddingRight"
    android:minHeight="?android:attr/listPreferredItemHeightSmall"
    android:textColor="@android:color/white" />

XML ベース: https://github.com/android/platform_frameworks_base/blob/master/core/res/res/layout/simple_list_item_1.xml

java - ListView アイテムのテキストの色を変更するには?

4 に答える 4

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