I am new to Android. I have a CheckBox in My MainActivity and checkbox in the listview for selecting the items. Firstly I want to select all the checkbox of the Listview from Checkbox in the MainActivity. Secondly I am getting EmailId of the users in the Listview which I want them in my Gmail for sending the message. Thirdly I should have the option of sending the message to selected ones from the Listview. I am Posting My Code. I Hope my problem will be solved here.
User_Info.java Class:
public class UserInfo extends AppCompatActivity {
ListView listview;
Button btn_send;
CheckBox checkbox;
ArrayList<Getter_Setter> user_list;
UserInfoAdapter adapter;
ProgressDialog dialog;
Parser parser = new Parser();
String url = "http://........";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_info);
listview = (ListView) findViewById(R.id.listview);
checkbox = (CheckBox) findViewById(R.id.checkbox);
btn_send = (Button) findViewById(R.id.btn_send);
ConnectivityManager cn = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo nf = cn.getActiveNetworkInfo();
if (nf != null && nf.isConnected() == true) {
new User_Info().execute();
}
btn_send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Intent for Gmail here with all Email ID's
}
});
}
public class User_Info extends AsyncTask <String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(UserInfo.this);
dialog.setIndeterminate(false);
dialog.setMessage("Please Wait....");
dialog.setCancelable(false);
dialog.show();
}
@Override
protected String doInBackground(String... params) {
try {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
JSONObject json = parser.getJSONFromUrl(url,nameValuePairs);
user_list = new ArrayList<Getter_Setter>();
int result = json.getInt("udata");
JSONArray array = json.getJSONArray("result");
if (result == 1){
for (int i = 0; i < array.length(); i++) {
JSONObject jsonObject = array.getJSONObject(i);
Getter_Setter getter_setter = new Getter_Setter();
getter_setter.setId(jsonObject.getString("id"));
getter_setter.setName(jsonObject.getString("name"));
getter_setter.setEmail(jsonObject.getString("email"));
getter_setter.setPassword(jsonObject.getString("password"));
getter_setter.setReg_Date(jsonObject.getString("reg_date"));
user_list.add(getter_setter);
adapter = new UserInfoAdapter(UserInfo.this,user_list);
}
} if (result == 0){
return "Something Went Wrong";
}
} catch (JSONException e) {
e.printStackTrace();
Log.e("Exception", "" + e.toString());
return "Try Again";
}
return null;
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
dialog.dismiss();
listview.setAdapter(adapter);
}
}
UserInfoAdapter.java Class:
public class UserInfoAdapter extends BaseAdapter {
Context context;
ArrayList<Getter_Setter> user_info_list;
public UserInfoAdapter(Context mContext, ArrayList<Getter_Setter> m_user_info_list) {
this.context = mContext;
this.user_info_list = m_user_info_list;
}
@Override
public int getCount() {
return user_info_list.size();
}
@Override
public Object getItem(int position) {
return user_info_list.get(position);
}
@Override
public long getItemId(int position) {
return user_info_list.indexOf(position);
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder mHolder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.user_info_adapter, null);
mHolder = new ViewHolder();
mHolder.Name = (TextView) convertView.findViewById(R.id.txt_name);
mHolder.Email = (TextView) convertView.findViewById(R.id.txt_email);
mHolder.checkbox = (CheckBox) convertView.findViewById(R.id.checkbox);
mHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag();
user_info_list.get(getPosition).setSelected((buttonView.isChecked()));
}
});
convertView.setTag(mHolder);
convertView.setTag(R.id.txt_name, mHolder.Name);
convertView.setTag(R.id.txt_email, mHolder.Email);
convertView.setTag(R.id.checkbox, mHolder.checkbox);
} else {
mHolder = (ViewHolder) convertView.getTag();
}
mHolder.checkbox.setTag(position);
mHolder.Name.setText("Name: " + user_info_list.get(position).getName());
mHolder.Email.setText("Email: " + user_info_list.get(position).getEmail());
mHolder.checkbox.setChecked(user_info_list.get(position).isSelected());
return convertView;
}
private class ViewHolder {
private TextView Name;
private TextView Email;
private CheckBox checkbox;
}
}
Getter_Setter.java Class:
public class Getter_Setter {
private String Id;
private String Name;
private String Email;
private String Password;
private String Reg_Date;
public boolean isSelected() {
return Selected;
}
public void setSelected(boolean selected) {
Selected = selected;
}
private boolean Selected = false;
public String getId() {
return Id;
}
public void setId(String id) {
Id = id;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
Email = email;
}
public String getPassword() {
return Password;
}
public void setPassword(String password) {
Password = password;
}
public String getReg_Date() {
return Reg_Date;
}
public void setReg_Date(String reg_Date) {
Reg_Date = reg_Date;
}
