单击这样的动态创建的按钮时，如何设置背景可绘制对象：
我正在使用上面的代码来创建动态按钮并跟踪特定按钮的点击：
for (int i = 1; i<8; i++)
{
if(i==7)
{
btn = custom.myButton(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT), null, i+30, "...");
btn.setTag(i);
linear_paging.addView(btn);
}
else
{
btn = custom.myButton(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT), null, i+30, ""+i);
btn.setTag(i);
linear_paging.addView(btn);
}
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(Earned_New.this, v.getTag()+" clicked", Toast.LENGTH_SHORT).show();
v.setBackgroundDrawable(getResources().getDrawable(R.drawable.black_rounded_background));
}
});
}
最后我得到了解决方案。请按照以下过程完成任务并根据您的要求进行修改，它一定会对您有所帮助： 1.）在 onResume() 方法中执行此操作：
new AsynDriverEarned().execute();
2.) CONST.EARNED_LISTVIEW_SIZE = 10//单页记录数
3.）这是内部类（AsyncTask）
class AsynDriverEarned extends AsyncTask<String, Void, String>{
ProgressDialog dialog=null;
JSONObject jsonObject;
JSONObject jsonUserDetail;
String response="";
String result="";
SharedPreferences settingPref;
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
dialog=new ProgressDialog(Earned_New.this);
dialog.setMessage("Loading...");
// dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
dialog.show();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
Log.i("DRIVER_ID", CONST.LOGIN_ID);
postParameters.add(new BasicNameValuePair("DRIVER_ID", CONST.LOGIN_ID));
try{
response=CustomHttpClient.executeHttpPost(CUSTOM_URL.Common_Url+"mobile_driver_earned.php", postParameters);
Log.i("response:", ""+response);
result = "OK";
if(response!=null){
try {
jsonObject = new JSONObject(response);
if(jsonObject.getBoolean("SUCCESS")){
pound_value_string = jsonObject.getString("TOTAL_EARNING");
result = "OK";
JSONArray jsonDriverArray = jsonObject.getJSONArray("DRIVER_ARRAY");
Log.i("jsonDriverArray:", ""+jsonDriverArray);
date_time_list = new ArrayList<String>();
drop_loc_list = new ArrayList();
passenger_names_list = new ArrayList();
total_earn_list = new ArrayList();
for (int i = 0; i < jsonDriverArray.length(); i++)
{
date_time_list.add(jsonDriverArray.getJSONObject(i).getString("BOOKING_DATE"));
drop_loc_list.add(jsonDriverArray.getJSONObject(i).getString("PASSENGER_DROP_LOCATION"));
passenger_names_list.add(jsonDriverArray.getJSONObject(i).getString("PASSENGER_NAME"));
total_earn_list.add(jsonDriverArray.getJSONObject(i).getString("EARNING"));
}
}
else{
result="FAILURE";
earner_error_message = jsonObject.getString("ERROR");
Log.i("earner_error_message", earner_error_message);
}
}
catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
result = e.getMessage();
}
}else{
result = "Timed Out!";
}
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
// result = e.getMessage();
}
return result;
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
dialog.dismiss();
if(result.equalsIgnoreCase("OK"))
{
pound_value.setText(pound_value_string);
ArrayList<String> temp_date_time_list = new ArrayList<String>();
ArrayList<String> temp_drop_loc_list = new ArrayList();
ArrayList<String> temp_passenger_names_list = new ArrayList();
ArrayList<String> temp_total_earn_list = new ArrayList();
int start_number_of_records = (CONST.EARNED_LISTVIEW_SIZE*(1-1)); // no_of_records*tag_value
Log.i("start_number_of_records", ""+start_number_of_records);
int end_number_of_records = (((CONST.EARNED_LISTVIEW_SIZE*(1-1))+CONST.EARNED_LISTVIEW_SIZE)-1); //(no_of_records*tag_value+no_of_records)-1
Log.i("end_number_of_records", ""+end_number_of_records);
if (end_number_of_records<date_time_list.size())
{
Log.i("ENTER:", "FIRST");
for (int j = start_number_of_records; j < end_number_of_records+1; j++)
{
temp_date_time_list.add(date_time_list.get(j));
temp_drop_loc_list.add(drop_loc_list.get(j));
temp_passenger_names_list.add(passenger_names_list.get(j));
temp_total_earn_list.add(total_earn_list.get(j));
}
Log.i("temp_date_time_list.size()", ""+temp_date_time_list.size());
setListAdapter(temp_date_time_list,temp_drop_loc_list,temp_passenger_names_list,temp_total_earn_list);
adapter.notifyDataSetChanged();
}
else
{
Log.i("ENTER:", "SECOND");
for (int j = start_number_of_records; j < date_time_list.size(); j++)
{
temp_date_time_list.add(date_time_list.get(j));
temp_drop_loc_list.add(drop_loc_list.get(j));
temp_passenger_names_list.add(passenger_names_list.get(j));
temp_total_earn_list.add(total_earn_list.get(j));
}
Log.i("temp_date_time_list.size()", ""+temp_date_time_list.size());
setListAdapter(temp_date_time_list,temp_drop_loc_list,temp_passenger_names_list,temp_total_earn_list);
adapter.notifyDataSetChanged();
}
int num = date_time_list.size();
Log.i("num", ""+num);
int counter=1;
while(num>CONST.EARNED_LISTVIEW_SIZE)
{
num = num-CONST.EARNED_LISTVIEW_SIZE; // num = 32-5==27
counter++;
Log.i("counter", ""+counter);
continue;
}
for (int i = 1; i<counter+1; i++)
{
btn = custom.myButton(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT), null, i+30, ""+i);
btn.setTag(i);
linear_paging.addView(btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v.setBackgroundDrawable(getResources().getDrawable(R.drawable.button_selector));
ArrayList<String> temp_date_time_list = new ArrayList<String>();
ArrayList<String> temp_drop_loc_list = new ArrayList();
ArrayList<String> temp_passenger_names_list = new ArrayList();
ArrayList<String> temp_total_earn_list = new ArrayList();
int start_number_of_records = (CONST.EARNED_LISTVIEW_SIZE*((Integer) v.getTag()-1)); // no_of_records*tag_value
// Log.i("start_number_of_records", ""+start_number_of_records);
int end_number_of_records = (((CONST.EARNED_LISTVIEW_SIZE*((Integer) v.getTag()-1))+CONST.EARNED_LISTVIEW_SIZE)-1); //(no_of_records*tag_value+no_of_records)-1
// Log.i("end_number_of_records", ""+end_number_of_records);
if (end_number_of_records<date_time_list.size())
{
Log.i("ENTER:", "FIRST");
for (int j = start_number_of_records; j < end_number_of_records+1; j++)
{
temp_date_time_list.add(date_time_list.get(j));
temp_drop_loc_list.add(drop_loc_list.get(j));
temp_passenger_names_list.add(passenger_names_list.get(j));
temp_total_earn_list.add(total_earn_list.get(j));
}
Log.i("temp_date_time_list.size()", ""+temp_date_time_list.size());
setListAdapter(temp_date_time_list,temp_drop_loc_list,temp_passenger_names_list,temp_total_earn_list);
adapter.notifyDataSetChanged();
}
else
{
Log.i("ENTER:", "SECOND");
for (int j = start_number_of_records; j < date_time_list.size(); j++)
{
temp_date_time_list.add(date_time_list.get(j));
temp_drop_loc_list.add(drop_loc_list.get(j));
temp_passenger_names_list.add(passenger_names_list.get(j));
temp_total_earn_list.add(total_earn_list.get(j));
}
Log.i("temp_date_time_list.size()", ""+temp_date_time_list.size());
setListAdapter(temp_date_time_list,temp_drop_loc_list,temp_passenger_names_list,temp_total_earn_list);
adapter.notifyDataSetChanged();
}
}
});
}
}
else
{
AlertDialog.Builder builder = new AlertDialog.Builder(Earned_New.this);
builder.setMessage(earner_error_message);
builder.setCancelable(false);
LayoutInflater inflater = getLayoutInflater();
View vw = inflater.inflate(R.layout.custom_title, null);
builder.setCustomTitle(vw);
builder.setNeutralButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
finish();
}
});
builder.show();
}
}
}