我想在特殊状态时更改可见性
所以我会这样做
else {
ImageView image_A_wrong = (ImageView)findViewById(R.id.imageView1);
image_A_wrong.setVisibility(View.GONE);
}
但是在eclipse上出现错误。
你知道为什么吗 ？
我的图像视图
<ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/quo100px" android:visibility="gone" />
Tks提前所有
这是我的完整文件
包 com.example.androidhive;
导入 java.util.ArrayList；导入 java.util.HashMap；导入 java.util.List；
导入 org.apache.http.NameValuePair；导入 org.json.JSONArray；导入 org.json.JSONException；导入 org.json.JSONObject；
导入android.app.ListActivity；导入 android.app.ProgressDialog；导入android.content.Intent；导入android.os.AsyncTask；导入android.os.Bundle；导入android.util.Log；导入android.view.View；导入 android.widget.AdapterView；导入 android.widget.AdapterView.OnItemClickListener；导入android.widget.ImageView；导入 android.widget.ListAdapter；导入 android.widget.ListView；导入 android.widget.SimpleAdapter；导入 android.widget.TextView；
公共类 quoPAPIERCORD 扩展 ListActivity {
// Progress Dialog private ProgressDialog pDialog; // Creating JSON Parser object JSONParser jParser = new JSONParser(); ArrayList<HashMap<String, String>> productsList; // url to get all products list private static String url_all_products_quo = >"http://192.168.1.81/php/android/get_all_quotidiens.php"; // JSON Node names private static final String TAG_SUCCESS = "success"; private static final String TAG_PRODUCTS = "products"; private static final String TAG_PID = "pid"; private static final String TAG_NAME = "name"; private static final String TAG_PRICE = "price"; private static String TAG_CU = "cu"; // products JSONArray JSONArray products = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.quotidiens); // Hashmap for ListView productsList = new ArrayList<HashMap<String, String>>(); // Loading products in Background Thread new LoadAllProducts().execute(); // Get listview ListView lv = getListView(); // on seleting single product // launching Edit Product Screen 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.pid)).getText() .toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), EditProductActivity.class); // sending pid to next activity in.putExtra(TAG_PID, 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); } } /** * Background Async Task to Load all product by making HTTP Request * */ class LoadAllProducts extends AsyncTask<String, String, String> { /** * Before starting background thread Show Progress Dialog * */ @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(quoPAPIERCORD.this); pDialog.setMessage("Loading products. Please wait..."); pDialog.setIndeterminate(false); pDialog.setCancelable(false); pDialog.show(); } /** * getting All products from url * */ 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_quo, >"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 price = c.getString(TAG_PRICE); String cu = c.getString(TAG_CU); ///////////// if (cu.equals("1")) { cu = "oui"; } else { ImageView image_A_wrong = (ImageView) >findViewById(R.id.imageView1); image_A_wrong.setVisibility(View.GONE); } // 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_PRICE, price); map.put(TAG_CU, cu); // adding HashList to ArrayList productsList.add(map); } } else { // no products found // Launch Add New product Activity Intent i = new Intent(getApplicationContext(), NewProductActivity.class); // Closing all previous activities i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(i); } } catch (JSONException e) { e.printStackTrace(); } return null; } /** * After completing background task Dismiss the progress dialog * **/ 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( quoPAPIERCORD.this, productsList, R.layout.list_item, new String[] { >TAG_PID, TAG_NAME, >TAG_PRICE, TAG_CU}, new int[] { R.id.pid, R.id.name, >R.id.price, R.id.cu }); // updating listview setListAdapter(adapter); } }); } }}
<?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="horizontal"
android:padding="5px"
android:stretchColumns="1">
<!-- Product id (pid) - will be HIDDEN - used to pass to other activity -->
<TextView
android:id="@+id/pid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone" />
<!-- Name Label -->
<TextView
android:id="@+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingRight="10px"
android:textSize="17sp"
android:layout_marginRight="10px"
android:layout_weight="0.2"
android:textColor="#fff"
android:gravity="left" />
<!-- price Label -->
<TextView
android:id="@+id/price"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingRight="5px"
android:textSize="17sp"
android:layout_marginRight="5px"
android:layout_weight="0.2"
android:textColor="#C00000"
android:gravity="left"
android:textStyle="bold" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/quo100px"/>
<TextView
android:id="@+id/cu"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingRight="5px"
android:textSize="17sp"
android:layout_marginRight="5px"
android:layout_weight="0.2"
android:textColor="#C00000"
android:gravity="left"
android:textStyle="bold" />
<TextView
android:id="@+id/mc"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingRight="5px"
android:textSize="17sp"
android:layout_marginRight="5px"
android:layout_weight="0.2"
android:textColor="#C00000"
android:gravity="left"
android:textStyle="bold" />
<TextView
android:id="@+id/tel"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingRight="5px"
android:textSize="17sp"
android:layout_marginRight="5px"
android:layout_weight="0.2"
android:textColor="#C00000"
android:gravity="left"
android:textStyle="bold" />
</LinearLayout>