Question

我有两项活动。一个在列表视图中显示所有通知，并显示指向pdf文件的链接。选择项目时会运行第二个活动。基本上第二个活动应该点击项目点击，它应该打开pdf文件。

嗯，事情是它没有激活项目选择的第二个活动。发布代码供您参考。

CODE：

AllEventsActivity.java

     public class AllEventsActivity extends ListActivity {


private ProgressDialog pDialog;

// Creating JSON Parser object
JSONParser jParser = new JSONParser();

ArrayList<HashMap<String, String>> productsList;


private static String url_all_products = "http://myurl/fetchnotice.php";

// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "notices";
private static final String TAG_PID = "nid";
private static final String TAG_NAME = "notice";
private static final String TAG_INFO = "noticeinfo";
private static final String TAG_DATE = "date";

// products JSONArray
JSONArray products = null;

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

    // Hashmap for ListView
    productsList = new ArrayList<HashMap<String, String>>();
    Button go_btn = (Button) findViewById(R.id.go_btn);
    // Loading products in Background Thread
    new LoadAllProducts().execute();

    // Get listview
    ListView lv = getListView();


    // on seleting single product
    // launching pdfviewer activity
    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting values from selected ListItem
            String pid = ((TextView) view.findViewById(R.id.einfo)).getText()
                    .toString();

            // Starting new intent
            Intent in = new Intent(getApplicationContext(),
                    PdfViewActivity.class);
            // sending pid to next activity
            in.putExtra("pathid", pid);

            // starting new activity and expecting some response back
            startActivityForResult(in, 100);
        }
    });

}

// Response from Edit Product Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    // if result code 100
    if (resultCode == 100) {
        // if result code 100 is received
        // means user edited/deleted product
        // reload this screen again
        Intent intent = getIntent();
        finish();
        startActivity(intent);
    }

}

class LoadAllProducts extends AsyncTask<String, String, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(AllEventsActivity.this);
        pDialog.setMessage("Loading results. Please wait...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(false);
        pDialog.show();
    }

    protected String doInBackground(String... args) {
        // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        // getting JSON string from URL
        JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);

        // Check your log cat for JSON reponse
        Log.d("All Products: ", json.toString());

        try {
            // Checking for SUCCESS TAG
            int success = json.getInt(TAG_SUCCESS);

            if (success == 1) {
                // products found
                // Getting Array of Products
                products = json.getJSONArray(TAG_PRODUCTS);

                // looping through All Products
                for (int i = 0; i < products.length(); i++) {
                    JSONObject c = products.getJSONObject(i);

                    // Storing each json item in variable
                    String id = c.getString(TAG_PID);
                    String name = c.getString(TAG_NAME);
                    String info = c.getString(TAG_INFO);
                    String date = c.getString(TAG_DATE);
                    // creating new HashMap
                    HashMap<String, String> map = new HashMap<String, String>();

                    // adding each child node to HashMap key => value
                    map.put(TAG_PID, id);
                    map.put(TAG_NAME, name);
                    map.put(TAG_INFO, info);
                    map.put(TAG_DATE, date);
                    // adding HashList to ArrayList
                    productsList.add(map);
                }
            } else {
                // nothing found
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }

    protected void onPostExecute(String file_url) {
        // dismiss the dialog after getting all products
        pDialog.dismiss();
        // updating UI from Background Thread
        runOnUiThread(new Runnable() {
            public void run() {
                /**
                 * Updating parsed JSON data into ListView
                 * */
                ListAdapter adapter = new SimpleAdapter(
                        AllEventsActivity.this, productsList,
                        R.layout.list_item_eve, new String[] { TAG_PID,
                                TAG_NAME, TAG_INFO, TAG_DATE },
                        new int[] { R.id.eid, R.id.ename, R.id.einfo, R.id.date});
                // updating listview
                setListAdapter(adapter);
            }
        });

    }
}
}

第二项活动：

       public class PdfViewActivity extends Activity { 


   private WebView webview;

    //private ProgressDialog progressDialog;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.photoview);

        webview = (WebView) findViewById(R.id.my_img);
        webview.getSettings().setBuiltInZoomControls(true);
        webview.getSettings().setUseWideViewPort(true);
        webview.getSettings().setDefaultZoom(WebSettings.ZoomDensity.FAR);

        String id = getIntent().getExtras().getString("pathid");
        webview.loadUrl("http://docs.google.com/viewer?url="+id);
    }
  }

XML代码：list_item_eve.xml

   <?xml version="1.0" encoding="utf-8"?>

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" 
android:background="@color/itm_bg"
android:textColor="@drawable/text_color">

<TextView
    android:id="@+id/eid"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:visibility="gone" 
    android:textColor="@drawable/text_color"/>

<!-- Name Label -->
<TextView
    android:id="@+id/ename"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:paddingTop="6dip"
    android:paddingLeft="6dip"
    android:textSize="12dip"
    android:textStyle="italic" 
    android:textColor="@drawable/text_color"/>


<TextView
    android:id="@+id/einfo"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:paddingLeft="12dip"
    android:autoLink="web"
    android:textColorLink="@color/link"
    android:paddingTop="6dip"
    android:textSize="14dip"
    android:textStyle="bold" 
    android:textColor="@drawable/text_color"/>

<TextView
    android:id="@+id/date"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:autoLink="web"
    android:textColorLink="@color/link"
    android:paddingLeft="15dip"
    android:paddingTop="6dip"
    android:textColor="#ffffff"
    android:textSize="9dip"
    android:textStyle="italic" />

<View android:id="@+id/sepbottom" 
      android:background="#000000" 
      android:layout_width = "fill_parent"
      android:layout_height="2dip"
      android:layout_marginTop="10dip"
      />

</LinearLayout>

all_events.xml

       <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@color/itm_bg"
android:textColor="@drawable/text_color">

<ListView
    android:id="@android:id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"/>

</LinearLayout>

Answer 1

最简单，最合适的方法是将ListView项目中的所有子视图设置为不可聚焦/不可点击，如下所示：

  <?xml version="1.0" encoding="utf-8"?>
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="vertical" 
   android:background="@color/itm_bg"
   android:textColor="@drawable/text_color">

<TextView
android:id="@+id/eid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone" 
android:focusable="false"
android:clickable="false"
 android:textColor="@drawable/text_color"/>

   <!-- Name Label -->
  <TextView
android:id="@+id/ename"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="6dip"
android:paddingLeft="6dip"
android:textSize="12dip"
android:textStyle="italic" 
android:focusable="false"
android:clickable="false"
android:textColor="@drawable/text_color"/>


<TextView
android:id="@+id/einfo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="12dip"
android:autoLink="web"
android:textColorLink="@color/link"
android:paddingTop="6dip"
android:textSize="14dip"
android:textStyle="bold" 
android:focusable="false"
android:clickable="false"
android:textColor="@drawable/text_color"/>

<TextView
android:id="@+id/date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="web"
android:textColorLink="@color/link"
android:paddingLeft="15dip"
android:paddingTop="6dip"
android:textColor="#ffffff"
 android:textSize="9dip"
android:focusable="false"
 android:clickable="false"
 android:textStyle="italic" />

<View android:id="@+id/sepbottom" 
  android:background="#000000" 
  android:layout_width = "fill_parent"
  android:layout_height="2dip"
  android:focusable="false"
  android:clickable="false"
  android:layout_marginTop="10dip"
  />

   </LinearLayout>

Answer 2

检查您是否在AndroidManifest文件中添加了第二个活动。

OnItemClickListener不使用自定义ListView适配器

2 个答案: