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ログインページから[詳細ページ]にデータを渡したいとします。しかし、詳細ページでは、ログインページで送信された文字列が詳細ページにNULL値を持つため、データを受け入れることができません。アクティビティのデータをAndroidの別のアクティビティに渡す方法
これは私のログインページのコードです：
public class MainActivity extends AppCompatActivity {
EditText editText, editText1;
Button button;
int success = 0;
ProgressDialog progressDialog;
JSONObject jsonObject;
HTTPURLConnection service;
String strname ="", strpass="";
String response;
String path = "http://sumbanggagasan.890m.com/select2.php";
Intent intent;
DetailGagasanku detailGagasanku;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText) findViewById(R.id.nik);
editText1 = (EditText) findViewById(R.id.pass);
button = (Button) findViewById(R.id.signin);
service = new HTTPURLConnection();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!editText.getText().toString().equals("") && !editText1.getText().toString().equals("")){
strname = editText.getText().toString();
strpass = editText1.getText().toString();
response = null;
new PostDataTOServer().execute();
} else{
Toast.makeText(getApplicationContext(), "Please Enter all fields", Toast.LENGTH_LONG).show();
}
}
});
}
private class PostDataTOServer extends AsyncTask<Void, Void, Void> {
//Create hashmap Object to send parameters to web service
HashMap<String, String> postDataParams;
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
postDataParams=new HashMap<String, String>();
postDataParams.put("NIK", strname);
postDataParams.put("pass", strpass);
//Call ServerData() method to call webservice and store result in response
response= service.ServerData(path,postDataParams);
try {
System.out.println(response + "menu");
jsonObject = new JSONObject(response);
//Get Values from JSONobject
System.out.println("success=" + jsonObject.get("successs"));
//success = jsonObject.getInt("success");
success = Integer.parseInt(jsonObject.getString("successs").trim());
System.out.println("Do in");
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
System.out.println("Post 1");
System.out.println(strname);
if (progressDialog.isShowing()) {
System.out.println("Post 2");
System.out.println(strpass);
progressDialog.dismiss();
}
if(success==1) {
//Toast.makeText(getApplicationContext(), "Berhasil", Toast.LENGTH_LONG).show();
Intent intent;
Bundle b;
b = new Bundle();
b.putString("username", strname);
intent = new Intent(getApplicationContext(), LandingPage.class);
intent.putExtras(b);
startActivity(intent);
} else{
Toast.makeText(getApplicationContext(), "Login gagal", Toast.LENGTH_LONG).show();
}
}
}
そして、これが私の詳細コードです：
public class DetailGagasanku extends AppCompatActivity {
TextView judul, manfaat;
Bundle bundle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail_gagasanku);
judul = (TextView)findViewById(R.id.textJudul);
manfaat = (TextView) findViewById(R.id.textManfaat);
bundle = getIntent().getExtras();
judul.setText(bundle.getString("judul_gagasan"));
if (bundle != null) {
if(bundle.containsKey("username"))
{
String s = bundle.getString("username");
manfaat.setText(s);
}
else
{
System.out.println("not send");
}
}
}
}
私は、そのユーザ名がnull値を持つ理由をお願いしたいと思います。あなたの情報については、 "judul_gagasan"変数は別のアクティビティから値を受け取ることができます。私はマイアダプターから送信します。
これは私のアダプターのコードです：
public class GagasanAdapter extends RecyclerView.Adapter<GagasanAdapter.GagasanHolder> {
List<String> gagasanList = new ArrayList<>();
public GagasanAdapter(List<String> gagasanList) {
this.gagasanList = gagasanList;
Log.v("gagasanSize", "" + gagasanList.size());
}
@Override
public GagasanHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_gagasan, parent, false);
return new GagasanHolder(v);
}
@Override
public void onBindViewHolder(final GagasanHolder holder, final int position) {
Log.v("Gagasan[" + position + "]", gagasanList.get(position));
String item = gagasanList.get(position);
holder.judulGagasan.setText(item);
holder.judulGagasan.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Context context = v.getContext();
Intent intent = new Intent(context, DetailGagasanku.class);
intent.putExtra("judul_gagasan", holder.judulGagasan.getText().toString());
context.startActivity(intent);
}
});
}
@Override
public int getItemCount() {
return gagasanList.size();
}
public class GagasanHolder extends RecyclerView.ViewHolder{
TextView judulGagasan;
public GagasanHolder(View itemView) {
super(itemView);
judulGagasan = (TextView) itemView.findViewById(R.id.tvListGagasan);
}
}
}