我创建了将数据从Android设备传递到Web API的应用程序。
1.作为第一步，用户应该登录，如果他是有效的用户应用程序，则保存令牌值。 然后去添加产品界面。在该界面中，用户可以将新产品添加到服务器。 3.要执行此任务，用户应将标记值传递给API的标头字段。 4. API的身体字段的其他细节。
这是我的登录活动
public class LoginActivity extends Activity {
private static final String TAG = RegisterActivity.class.getSimpleName();
private Button btnLogin;
private Button btnLinkToRegister;
private EditText inputEmail;
private EditText inputPassword;
private ProgressDialog pDialog;
private SessionManager session;
private SQLiteHandler db;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
inputEmail = (EditText) findViewById(R.id.email);
inputPassword = (EditText) findViewById(R.id.password);
btnLogin = (Button) findViewById(R.id.btnLogin);
btnLinkToRegister = (Button) findViewById(R.id.btnLinkToRegisterScreen);
// Progress dialog
pDialog = new ProgressDialog(this);
pDialog.setCancelable(false);
// SQLite database handler
db = new SQLiteHandler(getApplicationContext());
// Session manager
session = new SessionManager(getApplicationContext());
// Check if user is already logged in or not
if (session.isLoggedIn()) {
// User is already logged in. Take him to main activity
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
// Login button Click Event
btnLogin.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
String email = inputEmail.getText().toString().trim();
String password = inputPassword.getText().toString().trim();
// Check for empty data in the form
if (!email.isEmpty() && !password.isEmpty()) {
// login user
checkLogin(email, password);
} else {
// Prompt user to enter credentials
Toast.makeText(getApplicationContext(),
"Please enter the credentials!", Toast.LENGTH_LONG)
.show();
}
}
});
// Link to Register Screen
btnLinkToRegister.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(),
RegisterInfo.class);
startActivity(i);
finish();
}
});
}
/**
* function to verify login details in mysql db
*/
private void checkLogin(final String email, final String password) {
// Tag used to cancel the request
String tag_string_req = "req_login";
pDialog.setMessage("Logging in ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_LOGIN, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Login Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
//String token = jObj.getString("token");
// Check for error node in json
if (!error) {
// user successfully logged in
// Create login session
session.setLogin(true);
// Now store the user in SQLite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String created_at = user
.getString("created_at");
// Inserting row in users table
db.addUser(name, email, uid, created_at);
} else {
//Error in login. Get the error message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
// JSON error
//e.printStackTrace();
// Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show();
// Launch main activity
String token=e.getMessage();
new Sharedpreference(token);
Intent intent = new Intent(LoginActivity.this,
Product_Dashboard.class);
startActivity(intent);
finish();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Login Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting parameters to login url
Map<String, String> params = new HashMap<String, String>();
params.put("email", email);
params.put("password", password);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
这是我的产品活动
public class MainActivity extends Activity {
private EditText productName;
private EditText Category;
private EditText Description;
private EditText UnitPrice;
private EditText from;
private EditText to;
private EditText Quty;
RadioGroup priceoption;
RadioGroup Quantityoption;
Button Addproductbtn;
public static final String PREFS_NAME = "AOP_PREFS";
public final String PREFS_KEY = "AOP_PREFS_String";
private String Aceept = "@'application/vnd.fxhello.v1+json'";
private String token1;
private String Authontication = "Bearer$" +token1;
//--READ data
// String token = preferences.getString("var1", 0);
String price1 = "TRUE";
String qtySelect1 = "TRUE";
private String service1 = "";
private String limitedQty1 = "";
private String lqty1 = "";
public String getValue(Context context) {
SharedPreferences settings;
String text;
settings = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE); //1
text = settings.getString(PREFS_KEY, null); //2
token1=text;
return text;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
productName = (EditText) findViewById(R.id.productnameeditText);
Category = (EditText) findViewById(R.id.CategoryeditText);
Description = (EditText) findViewById(R.id.DescriptioneditText);
UnitPrice = (EditText) findViewById(R.id.UnitPriceeditText);
from = (EditText) findViewById(R.id.FromeditText);
to = (EditText) findViewById(R.id.ToeditText);
Quty = (EditText) findViewById(R.id.EnterquantityeditText);
priceoption = (RadioGroup) findViewById(R.id.priceoption);
Quantityoption = (RadioGroup) findViewById(R.id.Quantityoption);
Addproductbtn =(Button)findViewById(R.id.AddNewProductbtn);
Addproductbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String price = price1.toString();
String unit_price = UnitPrice.getText().toString();
String up = unit_price.toString();
String price_range_from = from.getText().toString();
String prf = price_range_from.toString();
String price_range_to = to.getText().toString();
String prt = price_range_to.toString();
String product_name = productName.getText().toString();
String pn = product_name.toString();
String category = Category.getText().toString();
String ct = category.toString();
String description = Description.getText().toString();
String des = description.toString();
String qtySelect = qtySelect1.toString();
String qty = Quty.toString();
String service = service1.toString();
String limitedQty = limitedQty1.toString();
String lmtq = limitedQty.toString();
String lqty = lqty1.toString();
insertToDatabase(price, up, prf, prt, pn, ct, des, qty, service, lmtq, lqty);
Toast.makeText(getApplicationContext(), "New Product Added!", Toast.LENGTH_SHORT).show();
finish();
}
});
}
private void insertToDatabase(String price, String up, String prf, String prt, String pn, String ct, String des, String qty, String service, String lmtq, String lqty) {
class SendPostReqAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
String paraprice = params[0];
String paraunit_price = params[1];
String paraprice_range_from = params[2];
String paraprice_range_to = params[3];
String paraproduct_name = params[4];
String paracategory = params[5];
String paraDescription = params[6];
String paraqtySelect = params[7];
String paraqty = params[8];
String paraservice = params[10];
String paralimitedQty = params[11];
String paralqty = params[12];
String price = price1.toString();
String Up = up.toString();
String Prf = prf.toString();
String Prt = prt.toString();
String Pn = pn.toString();
String Ct = ct.toString();
String Des = des.toString();
String qtySelect = qtySelect1.toString();
String Lmtq = lmtq.toString();
String service = service1.toString();
String limitedQty = limitedQty1.toString();
String lqty = lqty1.toString();
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("price", price));
nameValuePairs.add(new BasicNameValuePair("unit_price", Up));
nameValuePairs.add(new BasicNameValuePair("price_range_from", Prf));
nameValuePairs.add(new BasicNameValuePair("price_range_to", Prt));
nameValuePairs.add(new BasicNameValuePair("product_name", Pn));
nameValuePairs.add(new BasicNameValuePair("category", Ct));
nameValuePairs.add(new BasicNameValuePair("description", Des));
nameValuePairs.add(new BasicNameValuePair("qtySelect", qtySelect));
nameValuePairs.add(new BasicNameValuePair("lmtq", lmtq));
nameValuePairs.add(new BasicNameValuePair("service", service));
nameValuePairs.add(new BasicNameValuePair("limitedQty", limitedQty));
nameValuePairs.add(new BasicNameValuePair("lqty", lqty));
try {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(
"http://uat.fxhello.com/api/seller/productCreate");
httpPost.setHeader("Accept", Aceept);
httpPost.setHeader("Authorization",Authontication);
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
return "success";
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
Toast.makeText(getApplicationContext(), result, Toast.LENGTH_LONG).show();
}
}
SendPostReqAsyncTask sendPostReqAsyncTask = new SendPostReqAsyncTask();
sendPostReqAsyncTask.execute(price, up, prf, prt, pn, ct, des, qty, service, lmtq, lqty);
}
}
我收到了这个错误
致命异常：AsyncTask＃3 处理：com.example.official2.xoxo，PID：2364 java.lang.RuntimeException：执行doInBackground（）时发生错误 在android.os.AsyncTask $ 3.done（AsyncTask.java:309） 在java.util.concurrent.FutureTask.finishCompletion（FutureTask.java:354） at java.util.concurrent.FutureTask.setException（FutureTask.java:223） 在java.util.concurrent.FutureTask.run（FutureTask.java:242） 在android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:234） 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1113） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:588） 在java.lang.Thread.run（Thread.java:818） 引起：java.lang.ArrayIndexOutOfBoundsException：length = 11;指数= 11 at com.example.official2.xoxo.MainActivity $ 1SendPostReqAsyncTask.doInBackground（MainActivity.java:143） at com.example.official2.xoxo.MainActivity $ 1SendPostReqAsyncTask.doInBackground（MainActivity.java:131） 在android.os.AsyncTask $ 2.call（AsyncTask.java:295） 在java.util.concurrent.FutureTask.run（FutureTask.java:237） 在android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:234） 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1113） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:588） 在java.lang.Thread.run（Thread.java:818） 12-15 10：09：11.859 2364-2379 / com.example.official2.xoxo E / EGL_emulation：tid 2379：eglSurfaceAttrib（1165）：错误0x3009（EGL_BAD_MATCH）