小编Viv*_*rde的帖子

链接是 http://iipacademy.in/askpoll/ten_feed.php

异常在onPostExecute()方法中(第4行):

Log.i("result", result);
try {
    if (result != null) {
        JSONArray jsonArray = new JSONArray(result); // erreor
        for (int i = 0; i < jsonArray.length(); i++) {
            JSONObject objJson = jsonArray.getJSONObject(i);

            TopTenGetterSetter obj = new TopTenGetterSetter();  


            obj.setQ(objJson.getString("question"));
            obj.setA(objJson.getString("option1"));
            obj.setB(objJson.getString("option2"));
            obj.setC(objJson.getString("option3"));
            obj.setD(objJson.getString("option4"));

            polls.add(obj);
                        }

    }
} catch (JSONException e) {
    e.printStackTrace();
    Toast.makeText(getApplicationContext(), "error",
            Toast.LENGTH_SHORT).show();
}

logcat的:

12-18 03:20:45.447: W/System.err(2790): org.json.JSONException: Value response of type java.lang.String cannot be converted to JSONArray
12-18 03:20:45.447: W/System.err(2790):     at org.json.JSON.typeMismatch(JSON.java:111)
12-18 03:20:45.447: W/System.err(2790):     at …

您可以看到我的scrollview在jellybean和kitkat中显示相同,非常棒:

但是我很震惊地看到2.2,2.3.3等较低版本中的相同内容

它似乎显示附加到屏幕上部和下部的文本的一部分.

顺便说一句,中间的线条只是带有灰色背景的文本视图.

你可以看到我的xml代码,抱歉它有点长代码

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/stars"
android:padding="5dp"
android:scrollbars="vertical"
>


<LinearLayout


android:layout_width="match_parent"
android:layout_height="wrap_content"
        android:orientation="vertical" >

 <EditText
     android:id="@+id/editText1"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:ems="10"
     android:textColor="#fff"
     android:hint="Type your Full Name here"
     android:inputType="textPersonName"
     android:digits="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz " >

     <requestFocus />
 </EditText>

 <Button
     android:id="@+id/button1"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:gravity="center"
     android:background="#330000"
     android:onClick="showresult"
     android:textColor="#ffffff"
     android:alpha=".8"
     android:text="Show My Fortune" />

 <TextView
     android:id="@+id/textView13"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:textColor="#ffffff"
     android:textAppearance="?android:attr/textAppearanceSmall" />

 <LinearLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal" 
     android:baselineAligned="false">

     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_weight="1" 
         android:orientation="horizontal"
         >

         <TextView
             android:id="@+id/textView1"
             android:layout_width="20dp"
             android:layout_height="wrap_content"
             android:textColor="#ffffff"
             android:textSize="18sp"
              />

         <TextView
             android:id="@+id/textView2"
             android:layout_width="50dp"
             android:layout_height="wrap_content"

             android:textColor="#ffffff"
             android:textSize="18sp" …

我通过此代码成功地在parse.com仪表板数据浏览器中存储联系人.

public void readContacts(){
         ContentResolver cr = getContentResolver();
         Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);

         if (cur.getCount() > 0) {
            while (cur.moveToNext()) {
                String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
                String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) ==1) {
                    System.out.println(name );
                    ParseObject testObject = new ParseObject("Contacts");

                    testObject.put("names", name);

                    // get the phone number
                    Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
                                           ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
                                           new String[]{id}, null);
                    while (pCur.moveToNext()) {
                          String phone = pCur.getString(
                                 pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                         System.out.println( phone);
                        testObject.put("phonenumber", phone);

                    }
                    pCur.close();
                    testObject.saveInBackground();
           }
        }
     }
  }

但是没有检查重复的联系人! …

为了播放在线音乐,我在后台做了例外.我无法解决问题.

01-08 09:42:05.199: E/MediaPlayer(16257): Unable to to create media player
01-08 09:42:05.209: W/System.err(16257): java.io.IOException: setDataSource failed.: status=0x80000000
01-08 09:42:05.229: W/System.err(16257):    at android.media.MediaPlayer._setDataSource(Native Method)
01-08 09:42:05.229: W/System.err(16257):    at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1000)  
01-08 09:42:05.229: W/System.err(16257):    at android.media.MediaPlayer.setDataSource(MediaPlayer.java:960)
01-08 09:42:05.229: W/System.err(16257):    at com.example.audioplayer.MainActivity$Player.doInBackground(MainActivity.java:89)
01-08 09:42:05.229: W/System.err(16257):    at com.example.audioplayer.MainActivity$Player.doInBackground(MainActivity.java:1)  
01-08 09:42:05.229: W/System.err(16257):    at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-08 09:42:05.229: W/System.err(16257):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
01-08 09:42:05.229: W/System.err(16257):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
01-08 09:42:05.229: W/System.err(16257):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-08 09:42:05.239: W/System.err(16257):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
01-08 09:42:05.239: W/System.err(16257):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
01-08 09:42:05.239: W/System.err(16257):    at java.lang.Thread.run(Thread.java:856)
01-08 09:42:05.389: …

我和gradle和sdk经理有几个错误,所以我想安装android studio.

如何完全删除Android Studio,Eclipse以及随其安装的所有lib /包？

我正在使用youtube视频播放器api在我的应用程序中播放youtube视频,但我收到以下deadobject异常错误.

这是logcat

10-31 11:14:54.670: E/AndroidRuntime(13535): FATAL EXCEPTION: main
10-31 11:14:54.670: E/AndroidRuntime(13535): java.lang.IllegalStateException: android.os.DeadObjectException
10-31 11:14:54.670: E/AndroidRuntime(13535):    at com.google.android.apps.youtube.api.jar.a.eo.surfaceDestroyed(SourceFile:236)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.SurfaceView.updateWindow(SurfaceView.java:564)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:235)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.View.dispatchDetachedFromWindow(View.java:12086)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2772)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2772)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.ViewGroup.removeViewInternal(ViewGroup.java:3891)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.ViewGroup.removeViewInternal(ViewGroup.java:3866)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at android.view.ViewGroup.removeView(ViewGroup.java:3798)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at com.google.android.youtube.player.YouTubePlayerView$1.b(Unknown Source)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at com.google.android.youtube.player.internal.r.h(Unknown Source)
10-31 11:14:54.670: E/AndroidRuntime(13535):    at com.google.android.youtube.player.internal.r$e.onServiceDisconnected(Unknown Source)
10-31 11:14:54.670: E/AndroidRuntime(13535): …

我想用这个设备计算所有缓存的总和.为此,我得到一个编译时间错误:

IPackageStatsObserver cannot be resolved to a type

我在代码中提到了这个错误2次:

public long totalCacheSize(){
    totalSize=0;

    PackageManager packageManager = getApplicationContext().getPackageManager();

     /* List<PackageInfo> packs = packageManager
      .getInstalledPackages(PackageManager.GET_ACTIVITIES);*/
     // PackageManager.GET_META_DATA

    List<PackageInfo> packs = packageManager
            .getInstalledPackages(PackageManager.GET_META_DATA);

    for (int i = 0; i < packs.size(); i++) {

        PackageInfo p = packs.get(i);

        Method getPackageSizeInfo;
        try {
            getPackageSizeInfo = packageManager.getClass()
                    .getMethod("getPackageSizeInfo",
                        String.class, Class.forName("android.content.pm.IPackageStatsObserver"));

            getPackageSizeInfo.invoke(packageManager, p.packageName,
                    new IPackageStatsObserver.Stub() { //error

                        public void onGetStatsCompleted(
                                PackageStats pStats, boolean succeeded)
                                throws RemoteException {

                            totalSize = totalSize + pStats.cacheSize;
                            Log.d("size", totalSize+"");
                            Toast.makeText(getApplicationContext(), "size"+totalSize, Toast.LENGTH_SHORT).show(); …

我/proc/cpuinfo使用下面的代码执行以获取 Android 设备中 CPU 的详细信息。

        try {
            Process proc = Runtime.getRuntime().exec("cat /proc/cpuinfo");
            InputStream is = proc.getInputStream();
            TextView tv = (TextView)rootView.findViewById(R.id.textView1);
            tv.setText(getStringFromInputStream(is));
        } 
        catch (IOException e) {
            Log.e("TAG", "------ getCpuInfo " + e.getMessage());
        }

其中它还返回硬件名称。我得到的硬件名称的格式不正确。我已经在 Samsung Note 3、Micromax Canvas Doodle A111、Micromax Turbo A250 等各种设备上进行了测试。

这是我分别在这些设备中得到的：

• 三星 EXYNOS5420：（但我需要这个名称Samsung Exynos Octa 5420）
• QRD MSM8625Q EVBD ：（需要名称Qualcomm Snapdragon 200）
• MT6589 ：（联发科 MT6589）

我该如何克服这个问题，请帮助！

我在SQLite Manager中创建了数据库,但是我忘了提到一行.

现在,我想手动在中间添加一行,在其下方,其余的自动增量键应自动增加1.我希望我的问题很清楚.

谢谢.

在我们进入的设备中Manage apps- > running tab然后在底部我们看到使用的内存和可用内存实时改变它们的值.

我们如何将其编码到我的应用程序以显示相同的统计信息？

谢谢