Czesc,
mam problem z apka logujaca ktora ma sie laczyc poprzez skrypt php na serwerze z baza danych. W logcat'cie pokazuje blad metody onlogin zwiazanej z przyciskiem, aczkolwiek nie wiem co dokladnie jest nie tak. Bylbym wdzieczny za pomoc.
main
package com.example.ad.mysqldemo;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity {
EditText loginEt, passwordEt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EditText loginEt= (EditText) findViewById(R.id.etLogin);
EditText passwordEt= (EditText) findViewById(R.id.etPassword);
}
public void OnLogin(View view)
{
String login= loginEt.getText().toString();
String password=passwordEt.getText().toString();
String type = "login";
BackgroundWorker backgroundWorker=new BackgroundWorker(this );
backgroundWorker.execute(type,login, password);
}
}
BackgroundWorker
package com.example.ad.mysqldemo;
import android.app.AlertDialog;
import android.content.Context;
import android.os.AsyncTask;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
/**
* Created by ad on 2017-12-21.
*/
public class BackgroundWorker extends AsyncTask<String,Void,String> {
Context context;
AlertDialog alertDialog;
BackgroundWorker(Context ctx)
{
context=ctx;
}
@Override
protected String doInBackground(String... params) {
String type = params[0];
String login_url="https://adrian.kubahaha.tk//login.php";
if(type.equals("login"))
{
try {
String login = params[1];
String password = params[2];
URL url = new URL(login_url);
HttpURLConnection httpURLConnection=(HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream= httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String post_data = URLEncoder.encode("login","UTF-8")+"="+URLEncoder.encode(login,"UTF-8")+"&"
+URLEncoder.encode("password","UTF-8")+"="+URLEncoder.encode(password,"UTF-8");
bufferedWriter.write(post_data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String result="";
String line;
while((line = bufferedReader.readLine())!= null) {
result += line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return result;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPreExecute() {
alertDialog = new AlertDialog.Builder(context).create();
alertDialog.setTitle("Login Status");
}
@Override
protected void onPostExecute(String result) {
alertDialog.setMessage(result);
alertDialog.show();
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
}
activity main
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.ad.mysqldemo.MainActivity">
<EditText
android:id="@+id/etLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="14dp"
android:ems="10"
android:hint="login"
android:inputType="textPersonName" />
<EditText
android:id="@+id/etPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/etLogin"
android:layout_alignRight="@+id/etLogin"
android:layout_below="@+id/etLogin"
android:layout_marginTop="17dp"
android:ems="10"
android:hint="password"
android:inputType="textPassword" />
<Button
android:id="@+id/btnLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/etPassword"
android:layout_marginLeft="53dp"
android:layout_marginStart="53dp"
android:layout_marginTop="41dp"
android:text="Login"
android:onClick="OnLogin"/>
</RelativeLayout>
manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ad.mysqldemo">
<uses-permission android:name="android.permission.INTERNET"></uses-permission>"
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
logcat
12-23 23:44:52.917 2156-2156/? E/SamsungIME: SwiftKey guide popup condition 2 : false false false true true true true true true true
12-23 23:44:53.167 963-4470/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:53.167 963-4470/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:53.167 963-4470/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:53.167 963-4470/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:53.177 23485-23485/? E/Zygote: v2
12-23 23:44:53.187 23485-23485/? E/SELinux: [DEBUG] get_category: variable seinfo: untrusted sensitivity: NULL, cateogry: NULL
12-23 23:44:53.797 21309-6347/? E/NetworkScheduler: Unrecognised action provided: android.intent.action.PACKAGE_REPLACED
12-23 23:44:54.977 2156-2156/? E/SamsungIME: SwiftKey guide popup condition 2 : false false false true true true true true true true
12-23 23:44:55.157 269-269/? E/SMD: DCD OFF
12-23 23:44:56.027 23082-23082/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ad.mysqldemo, PID: 23082
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:4808)
at android.view.View$PerformClick.run(View.java:19918)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5608)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1397)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1192)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:4808)
at android.view.View$PerformClick.run(View.java:19918)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5608)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1397)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1192)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
at com.example.ad.mysqldemo.MainActivity.OnLogin(MainActivity.java:22)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:4808)
at android.view.View$PerformClick.run(View.java:19918)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5608)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1397)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1192)
12-23 23:44:56.097 963-23540/? E/android.os.Debug: ro.product_ship = true
12-23 23:44:56.097 963-23540/? E/android.os.Debug: ro.debug_level = 0x4f4c
12-23 23:44:56.237 13136-23541/? E/SQLiteLog: (284) automatic index on crash_info_summary(package_name_touched)
12-23 23:44:56.637 963-1410/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:56.637 963-1410/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:56.637 963-1410/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:56.637 963-1410/? E/ActivityManager: checkUser: useridlist=null, currentuser=0
12-23 23:44:56.657 23543-23543/? E/Zygote: v2
12-23 23:44:56.667 23543-23543/? E/SELinux: [DEBUG] get_category: variable seinfo: release sensitivity: NULL, cateogry: NULL
12-23 23:44:57.037 23543-23543/? E/ActivityThread: Failed to find provider info for com.samsung.android.coreapps.easysignup.public
12-23 23:44:57.037 23543-23543/? E/ActivityThread: Failed to find provider info for com.samsung.android.coreapps.easysignup.public