小编Max*_*nin的帖子

Help.I发现ListView的高度,我不知道px或dpi？我需要dpi

final ListView actualListView = mPullRefreshListView.getRefreshableView();

actualListView.getViewTreeObserver().addOnGlobalLayoutListener(
                new ViewTreeObserver.OnGlobalLayoutListener() {
                    public void onGlobalLayout() {
                        height = actualListView.getHeight();  

                    }
                });

我的hibernate.cfg.xml

<property name="connection.driver_class">org.postgresql.Driver</property>
        <property name="show_sql">true</property>
        <property name="connection.url">jdbc:postgresql://localhost:5432/pirates</property>
        <property name="connection.username">postgres</property>
        <property name="connection.password">mmm888</property>

        <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
        <property name="show_sql">false</property>
        <property name="hbm2ddl.auto">update</property>
        <property name="current_session_context_class">thread</property>

        <property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> 
        <property name="hibernate.c3p0.min_size">5</property>
        <property name="hibernate.c3p0.max_size">200</property>
        <property name="hibernate.c3p0.timeout">300</property>
        <property name="hibernate.c3p0.max_statements">50</property>
        <property name="hibernate.c3p0.idle_test_period">3000</property>
        <property name="hibernate.generate_statistics">true</property>

我的图书馆:

hibernate-commons-annotations-4.0.1.Final.jar
hibernate-core-4.1.10.Final.jar
hibernate-jpa-2.0-api-1.0.1.Final.jar
hibernate-validator-4.2.0.Final.jar
jbossjta-4.16.4.Final.jar
jboss-logging-3.1.0.GA.jar
jboss-transaction-api_1.1_spec-1.0.0.Final.jar
openjdk-6-b14.jar
validation-api-1.0.0.GA.jar
hibernate-c3p0-4.1.10.Final.jar

和我的错误:

29.04.2013 14:02:43 org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator getConfiguredConnectionProviderName
WARN: HHH000208: org.hibernate.connection.C3P0ConnectionProvider has been deprecated in favor of org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider; that provider will be used instead.
29.04.2013 14:02:43 org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator instantiateExplicitConnectionProvider
INFO: HHH000130: Instantiating explicit connection provider: org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider
Failed to create sessionFactory …

我使用选择器,我不知道如何设置文本大小.也许我做错了什么 - 帮忙

arrow.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/button_pressed" android:state_pressed="true" android:color="@color/green"></item>

</selector>

我有两个活动,我使用 android:configChanges="keyboardHidden|orientation|screenSize"

 @Override
      public void onConfigurationChanged(Configuration newConfig) {
          super.onConfigurationChanged(newConfig);
        setContentView(R.layout.activity_main);
          if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {

          } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {

          }
      }

一个主动用于纵向到第二个的横向方向, 但是当方向改变时,活动被加载并且数据丢失

如何保存数据并更改活动方向？

我使用traceView,我看到android.view.ViewRoot.handleMessage 76.4%这是什么意思？以及如何在我的源代码中找到这个bug的位置？

我正在使用ActionMode.Callback,但我需要知道文本何时被选中...例如

我不能自己决定要问的任务

我想测量ListView的高度.抓不到渲染ListView的时刻(rssListView.getHight(); = 0)

public class RSSactivity extends Activity {

    public static RssItem selectedRssItem = null;
    String feedUrl = "";
    ListView rssListView = null;
    ArrayList<RssItem> rssItems = new ArrayList<RssItem>();
    ArrayAdapter<RssItem> aa = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        rssListView = (ListView) findViewById(R.id.rssListView);
        aa = new ArrayAdapter<RssItem>(this, R.layout.list_item, rssItems);
        rssListView.setAdapter(aa); 
        feedUrl = rssURLTV.getText().toString();
        refressRssList();
        rssListView.getWidth(); // = 0 ,    
    }

    private void refressRssList() {

        ArrayList<RssItem> newItems = RssItem.getRssItems(feedUrl);
        rssItems.clear();
        rssItems.addAll(newItems);
        aa.notifyDataSetChanged();

    }

}

目标计算中间ListView屏幕的项目数

我不明白出了什么问题

我用了

  public class UrlArrayAdapter extends BaseAdapter {...      
         ArrayList<UrlItem> objects;

        UrlArrayAdapter(Context context, ListView urlListView,
                ArrayList<UrlItem> urlLists) {
objects = urlLists; ...



    //method
    public void deleteItem(int numberToDelete) {        
            objects.remove(numberToDelete);      
             notifyDataSetChanged();
        }

和(最有趣的)

我得到numberToDelete = 1

然后删除该行

但对象

当numberToDelete = 0时

然后删除该行

但对象

当numberToDelete = 2时

对象

但是在notifyDataSetChanged()之后; IndexOutOfBoundException

我已经有了帖子......但我无法解决这个问题

我使用notifyDataSetChanged时IndexOutOfBoundException

stackoverflow.com/a/9260757/1568164我觉得情况就是这样,我用但不行

然后我得到一个进一步删除的位置

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

        // Planet to display
        UrlItem urlItem = (UrlItem) this.getItem(position);
        ViewHolder viewHolder = null;

        if (convertView == null) {

            convertView = …

我在用

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    TextView tv = new TextView(this);

     GoogleAPI.setHttpReferrer("http://code.google.com/p/google-api-translate-java/");
     GoogleAPI.setKey("AIzaSyBi7y4EgC0B-Q9UZg-tOzsOI0sLQ8F1Oow");

        try {
            String translatedText = Translate.DEFAULT.execute("Bonjour le monde", Language.FRENCH, Language.ENGLISH);
        } catch (GoogleAPIException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

}

我收到以下错误,我不明白我做错了什么

02-26 10:53:53.409: W/System.err(2612): com.google.api.GoogleAPIException: java.lang.Exception: [google-api-translate-java] Error retrieving translation. 02-26 10:53:53.409: W/System.err(2612): at com.google.api.translate.TranslateV2.execute(TranslateV2.java:68) 02-26 10:53:53.409: W/System.err(2612): at com.example.testtranslate.Translator.onCreate(Translator.java:32) 02-26 10:53:53.409: W/System.err(2612): at android.app.Activity.performCreate(Activity.java:5158) 02-26 10:53:53.409: W/System.err(2612): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 02-26 10:53:53.409: W/System.err(2612): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148) 02-26 10:53:53.409: W/System.err(2612): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2211) 02-26 …

可能重复:
ViewPager和片段 - 存储片段状态的正确方法是什么？

我该如何保存片段？(它位于活动中)当我旋转屏幕时,重新启动的活动会重新创建片段