不幸的應用程序停止工作

Question

我附上了registeractivity.xml文件，registeractivity.java文件，mainactivity.java文件，清單文件和logcat。

每當我輸入用戶名，電子郵件和密碼，當我點擊註冊按鈕停止工作時運行此應用程序。

XML文件：

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    tools:context="com.example.user.loginapp.RegisterActivity"> 


    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textPersonName" 
     android:hint="Username" 
     android:ems="10" 
     android:id="@+id/usernameRegistereditText" 
     android:layout_alignParentTop="true" 
     android:layout_alignParentStart="true" /> 

    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textEmailAddress" 
     android:ems="10" 
     android:hint="E-mail" 
     android:id="@+id/emailRegistereditText" 
     android:layout_below="@+id/usernameRegistereditText" 
     android:layout_centerHorizontal="true" /> 

    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textPassword" 
     android:ems="10" 
     android:hint="Password" 
     android:id="@+id/passwordRegistereditText" 
     android:layout_below="@+id/emailRegistereditText" 
     android:layout_alignParentEnd="true" /> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Sign Up" 
     android:id="@+id/signupbutton" 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true" /> 
</RelativeLayout> 

RegisterActivity.Java文件：

package com.example.user.loginapp; 

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 

import com.parse.ParseException; 
import com.parse.ParseUser; 
import com.parse.SignUpCallback; 

public class RegisterActivity extends AppCompatActivity { 

    protected EditText mUsername; 
    protected EditText mEmail; 
    protected EditText mPassword; 
    protected Button mSignup; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_register); 
     //initialise 
     mUsername=(EditText)findViewById(R.id.usernameRegistereditText); 
     mEmail=(EditText)findViewById(R.id.emailRegistereditText); 
     mPassword=(EditText)findViewById(R.id.passwordRegistereditText); 
     mSignup=(Button)findViewById(R.id.signupbutton); 

     //Listen to button 
     mSignup.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       //get username password and email and convert to string 
       String username=mUsername.getText().toString().trim(); 
       String email=mEmail.getText().toString().trim(); 
       String password=mPassword.getText().toString().trim(); 

       // store user to parse 
       ParseUser user=new ParseUser(); 
       user.setUsername(username); 
       user.setEmail(email); 
       user.setPassword(password); 
       user.signUpInBackground(new SignUpCallback() { 
        @Override 
        public void done(ParseException e) { 
         if(e==null){ 
          Toast.makeText(RegisterActivity.this,"Sign-up successful",Toast.LENGTH_LONG).show(); 
         }else{ 
          //error message 
         } 
        } 
       }); 
      } 
     }); 

    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_register, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 
} 

mainActivity.java文件：

import com.parse.Parse; 
import com.parse.ParseObject; 
import com.parse.ParseObject.*; 

public class MainActivity extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     Parse.enableLocalDatastore(this); 

     Parse.initialize(this); 
     ParseObject testObject = new ParseObject("TestObject"); 
     testObject.put("foo", "bar"); 
     testObject.saveInBackground(); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 
} 

清單文件：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.user.loginapp" > 

    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <meta-data 
      android:name="com.parse.APPLICATION_ID" 
      android:value="E9N4CpvflF5WfGVaQ5kBXYHgNA1Z2BE0cXhgc82j" /> 
     <meta-data 
      android:name="com.parse.CLIENT_KEY" 
      android:value="IybWtApcNpi8Ky5odgHSAp34oyaxkFw0Jz9voH5U" /> 

     <activity 
      android:name=".RegisterActivity" 
      android:label="@string/title_activity_register" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name=".MainActivity" 
      android:label="@string/app_name" > 
     </activity> 
    </application> 

</manifest> 

logcat的：

01-26 16:40:41.028 3836-3836/com.example.user.loginapp E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache 
01-26 16:40:41.048 3836-3836/com.example.user.loginapp E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints() 
01-26 16:41:00.912 3836-3836/com.example.user.loginapp E/AndroidRuntime﹕ FATAL EXCEPTION: main 
    java.lang.IllegalArgumentException: You must create this type of ParseObject using ParseObject.create() or the proper subclass. 
      at com.parse.ParseObject.<init>(ParseObject.java:365) 
      at com.parse.ParseObject.<init>(ParseObject.java:334) 
      at com.parse.ParseUser.<init>(ParseUser.java:162) 
      at com.example.user.loginapp.RegisterActivity$1.onClick(RegisterActivity.java:43) 
      at android.view.View.performClick(View.java:4240) 
      at android.view.View$PerformClick.run(View.java:17721) 
      at android.os.Handler.handleCallback(Handler.java:730) 
      at android.os.Handler.dispatchMessage(Handler.java:92) 
      at android.os.Looper.loop(Looper.java:137) 
      at android.app.ActivityThread.main(ActivityThread.java:5103) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:525) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
      at dalvik.system.NativeStart.main(Native Method) 

Answer 1

替換下面的代碼行，

ParseObject testObject = new ParseObject("TestObject"); 

用，

ParseObject testObject = ParseObject.create("TestObject"); 

它會被解決。

Reference

Answer 2

錯誤是說，必須的parseObject其create（）方法來創建。您剛剛新建了一個，而不使用其工廠方法。你想是這樣的：

ParseObject testObject = ParseObject.create("TestObject"); 

Answer 3

註釋掉以下行的嘗試再次運行：

// Parse.enableLocalDatastore(this); 
    //  Parse.initialize(this); 
     //  ParseObject testObject = new ParseObject("TestObject"); 
     // testObject.put("foo", "bar"); 
//   testObject.saveInBackground();