我想用java设置listview的背景颜色... 下面是我想要设置列表视图的背景颜色的代码 名称，地址，varificationtype中的值来自服务器。 现在我想将listview的背景颜色设置为RED 我已经定义了
public class GetLead extends ListActivity implements OnClickListener{
private ProgressDialog pDialog;
// URL to get contacts JSON
// private static String url = "104.25.125.70/verification/getCaf";
// JSON Node names
private static final String TAG_ID = "cid";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
// private static final String TAG_CONTACTS = "contacts";
//
String priority="high";
private static final String TAG_ADDRESS = "address";
private static final String TAG_STATUS = "status";
private static final String TAG_VARTYPE = "verification";
private long backPressedTime = 0;
GlobalClass gclass;
// contacts JSONArray
JSONArray contacts = null;
Button refresh, logout;
// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
//Remove notification bar
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_getjson);
// startService(new Intent(this, LocationBackgroundService.class));
contactList = new ArrayList<HashMap<String, String>>();
ListView lv = getListView();
// Listview on item click listener
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
// getting values from selected ListItem
String custid = ((TextView) view.findViewById(R.id.custId))
.getText().toString();
String name = ((TextView) view.findViewById(R.id.name))
.getText().toString();
String address = ((TextView) view.findViewById(R.id.address))
.getText().toString();
String verType = ((TextView) view.findViewById(R.id.verificationType))
.getText().toString();
// Starting single contact activity
if(verType.equals("reside")){
Intent in = new Intent(getApplicationContext(),
resideVarStatusUpdate.class);
in.putExtra(TAG_ID, custid);
in.putExtra(TAG_NAME, name);
in.putExtra(TAG_ADDRESS, address);
startActivity(in);
}
else if(verType.equals("reside1")){
Intent in = new Intent(getApplicationContext(),
reside1VarStatusUpdate.class);
in.putExtra(TAG_ID, custid);
in.putExtra(TAG_NAME, name);
in.putExtra(TAG_ADDRESS, address);
startActivity(in);
}
}
});
// Calling async task to get json
new GetContacts().execute();
refresh = ((Button) findViewById(R.id.refresh));
refresh.setOnClickListener(this);
logout = ((Button) findViewById(R.id.logout));
logout.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (v == refresh){
new GetContacts().execute();
}
else if (v == logout){
this.finish();
}
}
/**
* Async task class to get json by making HTTP call
* */
private class GetContacts extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(GetLead.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
String jsonStr = null;
// get user data from session
final GlobalClass globalVariable = (GlobalClass) getApplicationContext();
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("id",globalVariable.getId()));
// email
try {
jsonStr = SimpleHttpClient
.executeHttpPost(
"http://"+constantVar.ip+"/verification/getCaf",
postParameters);
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
contacts = jsonObj.getJSONArray("data");
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String address = c.getString(TAG_ADDRESS);
String status = c.getString(TAG_STATUS);
String varType = c.getString(TAG_VARTYPE);
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_ID, id);
contact.put(TAG_NAME, name);
contact.put(TAG_ADDRESS, address);
contact.put(TAG_STATUS, status);
contact.put(TAG_VARTYPE, varType);
contact.put("priority", priority);
// adding contact to contact list
contactList.add(contact);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(GetLead.this, contactList, R.layout.list_item, new String[]{TAG_ID, TAG_NAME, TAG_ADDRESS, TAG_VARTYPE, priority}, new int[]{R.id.custId,
R.id.name, R.id.address, R.id.verificationType});
if (priority.equals("high")) {
setListAdapter(adapter);
LinearLayout listLayout = (LinearLayout)findViewById(R.id.list_layout);
listLayout.setBackgroundColor(Color.GREEN);
}
}
}
我如何才能在这里使用Java？
答案 0 :(得分：0)
在onPostExecute()
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
final ListAdapter adapter = new SimpleAdapter(GetLead.this, contactList, R.layout.list_item, new String[]{TAG_ID, TAG_NAME, TAG_ADDRESS, TAG_VARTYPE, priority}, new int[]{R.id.custId,
R.id.name, R.id.address, R.id.verificationType});
if (priority.equals("high")) {
GetLead.this.runOnUiThread(new Runnable() {
@Override
public void run() {
setListAdapter(adapter);
getListView().setBackgroundColor(getResources().getColor(R.color.colorAccent));
}
});
}
}
答案 1 :(得分：0)
您应该在适配器中执行此操作，覆盖getView，如下所示：
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.custom_event_row_view, parent, false);
convertView.setBackgroundColor(Color.RED);
现在您可以根据需要设置每个条目的颜色。
答案 2 :(得分：0)
实际上，您必须设置xml中使用的布局背景颜色以相应地设置颜色。
if (priority.equals("high")) {
LinearLayout listLayout = listItem.findViewByid(R.id.list_layout);
listLayout.setBackground(R.color.Red)
setListAdapter(adapter);
}