When i inserting filed like:
String name = "Bob"
Data inserted successfully, but when i want to inserted data from EditText filed i have eror.
What does it mean?
java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference at hk.ust.cse.comp107x.chatclientcolors.MyProfile$1.onClick(MyProfile.java:79)
profile class for insert data to DB
package hk.ust.cse.comp107x.chatclientcolors;
import android.app.AlertDialog;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.database.sqlite.SQLiteDatabase;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MyProfile extends ActionBarActivity {
final Context context = this;
Button buttonEditProfile;
EditText editTextName, editTextSurname, editTextAge, editTextSkype, editTextEmail, editTextPhone;
DBHelper dbHelper;
SQLiteDatabase sqLiteDatabase;
String name;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_profile);
dbHelper = new DBHelper(this, "myProfileDB.db", null, 1);
sqLiteDatabase = dbHelper.getWritableDatabase();
buttonEditProfile = (Button) findViewById(R.id.buttonEditProfile);
editTextName = (EditText) findViewById(R.id.editTextEnterName);
/* editTextSurname = (EditText) findViewById(R.id.editTextEnterSurname);
editTextAge = (EditText) findViewById(R.id.editTextEnterAge);
editTextSkype = (EditText) findViewById(R.id.editTextEnterSkype);
editTextEmail = (EditText) findViewById(R.id.editTextEnterEmail);
editTextPhone = (EditText) findViewById(R.id.editTextEnterPhone);*/
}
@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_my_profile, 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);
}
public void onClickEditProfile(View view) {
LayoutInflater layoutInflaterEditProfile = LayoutInflater.from(context);
View view1EditProfile = layoutInflaterEditProfile.inflate(R.layout.edit_profile, null);
final AlertDialog.Builder alertDialogEditProfile = new AlertDialog.Builder(MyProfile.this);
alertDialogEditProfile.setTitle("Edit profile");
alertDialogEditProfile.setView(view1EditProfile);
alertDialogEditProfile.setPositiveButton("Save", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
name = editTextName.getText().toString();
dbHelper.insertData(name);
Log.i("TAG", "DATA added");
}
});
alertDialogEditProfile.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialogEditProfile.show();
}
}
DB class
package hk.ust.cse.comp107x.chatclientcolors;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.BaseColumns;
import android.util.Log;
/**
* Created by Oleksandr on 03.09.2015.
*/
public class DBHelper extends SQLiteOpenHelper implements BaseColumns{
public static final String DATABASE_NAME = "myProfileDB.db";
public static final int DATABASE_VERSION = 1;
public static final String DATABASE_TABLE = "profile";
public static final String NAME = "name";
public static final String SURNAME = "surname";
public static final String AGE = "age";
public static final String SKYPE = "skype";
public static final String EMAIL = "email";
public static final String PHONE = "phone";
private static final String DATABASE_TABLE_SCRIPT = "create table " + DATABASE_TABLE +
" (" + BaseColumns._ID + " integer primary key autoincrement, " + NAME + " text, " +
SURNAME + " text, " + AGE + " integer, " + SKYPE + " text, " + EMAIL + " text, " +
PHONE + " integer);";
public DBHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
public DBHelper(Context context, String name, SQLiteDatabase.CursorFactory factory,
int version) {
super(context, name, factory, version);
}
public boolean insertData(String name){
SQLiteDatabase database = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(NAME, name);
long result = database.insert(DATABASE_TABLE, null,contentValues);
if (result == -1)
return false;
else
return true;
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(DATABASE_TABLE_SCRIPT);
Log.i("TAG","DB Created");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF IT EXISTS " + DATABASE_TABLE);
onCreate(db);
}
}
xml layout with alert dialog and edittexts fileds
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/Entername"
android:id="@+id/textView8"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editTextEnterName"
android:layout_below="@+id/textView8"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/EnterSurname"
android:id="@+id/textView9"
android:layout_below="@+id/editTextEnterName"
android:layout_alignParentEnd="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editTextEnterSurname"
android:layout_below="@+id/textView9"
android:layout_alignParentEnd="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/EnterAge"
android:id="@+id/textViewAge"
android:layout_below="@+id/editTextEnterSurname"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editTextEnterAge"
android:layout_below="@+id/textViewAge"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/EnterSkype"
android:id="@+id/textView11"
android:layout_below="@+id/editTextEnterAge"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editTextEnterSkype"
android:layout_below="@+id/textView11"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/EnterEmail"
android:id="@+id/textView12"
android:layout_below="@+id/editTextEnterSkype"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="@+id/editTextEnterEmail"
android:layout_below="@+id/textView12"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/EnterPhone"
android:id="@+id/textView3"
android:layout_below="@+id/editTextEnterEmail"
android:layout_alignParentEnd="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/editTextEnterPhone"
android:layout_below="@+id/textView3"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
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