android 中的共享首选项显示未找到默认值 [英] Shared Preferences in android showing Default value not found
本文介绍了android 中的共享首选项显示未找到默认值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我开始存储和获取共享首选项.当用户注册成功后，该值必须存储在他的个人资料中，除了我的个人资料类.我不知道为什么要获取默认值给我一个建议.
I strucked in storing and getting shared preferences.When a user has been registered if that registration is success then that values has to be stored in his profile nothing but my profile class.I don't know why am getting default value please give me a suggestion.
提前致谢.
请再次告诉我我在这里更新了代码.
Please tellmesomething Again I updated the code here.
public class Register extends Activity {
/**
* Defining layout items.
**/
EditText mFirstName, mLastName, mUsername, mMobile, mPassword;
ImageView img_back;
Button btnRegister, mbtnSignIn;
TextView registerErrorMsg;
String jsonresponce=null;
String enteredUsername,enteredPassword,enteredfname,enteredlname,enteredmobile;
String REGISTER_URL;
ProgressDialog pd;
private SharedPreferences sharedpreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
mFirstName = (EditText) findViewById(R.id.fname);
mLastName = (EditText) findViewById(R.id.lname);
mUsername = (EditText) findViewById(R.id.username);
mMobile = (EditText) findViewById(R.id.mobie);
mPassword = (EditText) findViewById(R.id.pword);
btnRegister = (Button) findViewById(R.id.register);
mbtnSignIn = (Button) findViewById(R.id.signin);
registerErrorMsg = (TextView) findViewById(R.id.tv);
sharedpreferences = getSharedPreferences("a2a", Context.MODE_PRIVATE);
img_back = (ImageView) findViewById(R.id.imageback);
img_back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i_backtohome = new Intent(Register.this, HomeActivity.class);
startActivity(i_backtohome);
}
});
mbtnSignIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i_backtosignin = new Intent(Register.this, Signin.class);
startActivity(i_backtosignin);
}
});
btnRegister.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
enteredUsername = mUsername.getText().toString();
Log.e("username",enteredUsername);
enteredPassword = mPassword.getText().toString();
Log.e("username",enteredPassword);
enteredfname = mFirstName.getText().toString();
Log.e("username",enteredfname);
enteredlname = mLastName.getText().toString();
Log.e("username",enteredlname);
enteredmobile = mMobile.getText().toString();
Log.e("username",enteredmobile);
REGISTER_URL = "http://ffhhhjkhjgh/register.php?UserName="+enteredUsername+"&FirstName="+enteredfname+"&LastName="+enteredlname+"&Mobile="+enteredmobile+"&Pass="+enteredPassword;
// REGISTER_URL = REGISTER_URL + enteredUsername + enteredPassword + enteredfname + enteredlname + enteredmobile;
Log.e("finalurl",REGISTER_URL);
if (enteredUsername.equals("") || enteredfname.equals("") || enteredlname.equals("")
|| enteredmobile.equals("") || enteredPassword.equals("")) {
Toast.makeText(Register.this, "All Fields are Mandatory", Toast.LENGTH_LONG).show();
return;
}
if (mUsername.length() <= 1 || mPassword.length() <= 1) {
Toast.makeText(Register.this, "Username or password length must be greater than one", Toast.LENGTH_LONG).show();
return;
}
new AsyncDataClass().execute();
}
});
}
class AsyncDataClass extends AsyncTask<String, String, String> {
/* String fName;
String lName;
public AsyncDataClass(){
this.fName = enteredfname;
this.lName = enteredlname;
}*/
@Override
protected void onPreExecute() {
super.onPreExecute();
pd = new ProgressDialog(Register.this);
pd.setMessage("Loading...");
pd.setCanceledOnTouchOutside(false);
pd.show();
}
@Override
protected String doInBackground(String... params) {
try{
URL url = new URL(REGISTER_URL);
String res;
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setDoInput(true);
conn.connect();
res = conn.getResponseMessage();
Log.e("res", res);
InputStream in = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
try{
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
in.close();
reader.close();
jsonresponce = sb.toString();
Log.e("jsondata", jsonresponce);
}catch (Exception e) {
e.printStackTrace();
}finally {
try {
conn.disconnect();
}
catch (Exception e) {
e.printStackTrace();
}
}
}catch (Exception e){
e.printStackTrace();
}
return jsonresponce;
}
@Override
protected void onPostExecute(String s) {
pd.dismiss();
if("SUCCESS".equals(jsonresponce)){
Toast.makeText(getApplicationContext(),jsonresponce,Toast.LENGTH_SHORT).show();
SharedPreferences sharedpreferences = getApplicationContext().getSharedPreferences("a2a", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString("enteredfname", enteredfname);
editor.putString("enteredlname", enteredlname);
editor.commit();
}else{
Toast.makeText(getApplicationContext(),jsonresponce,Toast.LENGTH_SHORT).show();
}
super.onPostExecute(s);
}
}
}
推荐答案
您正在同时使用 getSharedPreferences 和 getDefaultSharedPreferences.
You are using getSharedPreferences and getDefaultSharedPreferences together.
这样做 -
SharedPreferences sharedpreferences = getApplicationContext().getSharedPreferences("a2a", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString("enteredfname", enteredfname);
editor.putString("enteredlname", enteredlname);
editor.commit();
后来 -
SharedPreferences preferences = getApplicationContext().getSharedPreferences("a2a", Context.MODE_PRIVATE);
String value = preferences.getString("enteredfname", "enteredfname");
这篇关于android 中的共享首选项显示未找到默认值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
