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**ISSUE:**
я проверил на базе эмулятора становится созданными и приложение работает perfectly.However, когда я нажимаю кнопку Отправить на реальном устройстве Android, когда это приложение работает, он силой закрывается. Пожалуйста, помогите мне friends.Code, как показано ниже:Android Приложение работает отлично на эмуляторе, но падает на реальное устройство
This is main.xml file where user enters information and clicks on Submit after which values he enters via gui should get saved to respective table in database.
**Main.xml**
--------
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<EditText
android:id="@+id/editxt_mbno"
android:textColorHint="@color/BurlyWood"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/txt_mbno"
android:layout_alignBottom="@+id/txt_mbno"
android:layout_marginLeft="40dp"
android:layout_toRightOf="@+id/txt_mbno"
android:ems="10"
android:hint="@string/edit_mbno" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/txt_narrative"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txt_welcome"
android:layout_centerHorizontal="true"
android:text="@string/narrative"
android:textColor="@color/LimeGreen"
android:textSize="16sp" />
<TextView
android:id="@+id/txt_welcome"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp"
android:text="@string/welcome"
android:textColor="@color/red"
android:textSize="28sp" />
<EditText
android:id="@+id/editxt_cloudid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/sbmt_btn"
android:layout_alignLeft="@+id/editxt_empid"
android:ems="10"
android:hint="@string/edit_cloudid"
android:textColorHint="@color/BurlyWood" />
<EditText
android:id="@+id/editxt_empid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/editxt_cloudid"
android:layout_alignLeft="@+id/editxt_clientid"
android:ems="10"
android:hint="@string/edit_empid"
android:textColorHint="@color/BurlyWood" />
<EditText
android:id="@+id/editxt_clientid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/editxt_empid"
android:layout_alignLeft="@+id/editxt_mbno"
android:ems="10"
android:hint="@string/edit_clientid"
android:textColorHint="@color/BurlyWood" />
<TextView
android:id="@+id/txt_employeeid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/txt_narrative"
android:layout_alignTop="@+id/editxt_empid"
android:layout_marginTop="14dp"
android:text="@string/employee_id"
android:textColor="@color/Chocolate" />
<TextView
android:id="@+id/txt_clientid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editxt_clientid"
android:layout_alignBottom="@+id/editxt_clientid"
android:layout_alignLeft="@+id/txt_employeeid"
android:text="@string/client_id"
android:textColor="@color/Chocolate" />
<TextView
android:id="@+id/txt_mbno"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/editxt_clientid"
android:layout_alignLeft="@+id/txt_clientid"
android:layout_marginBottom="26dp"
android:text="@string/mobile_no"
android:textColor="@color/Chocolate" />
<Button
android:id="@+id/sbmt_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toRightOf="@+id/txt_mbno"
android:background="@drawable/draw"
android:text="@string/btn_txt" />
<TextView
android:id="@+id/txt_cloudid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editxt_cloudid"
android:layout_alignBottom="@+id/editxt_cloudid"
android:layout_alignLeft="@+id/txt_employeeid"
android:text="@string/cloud_id"
android:textColor="@color/Chocolate" />
</RelativeLayout>
**
This is the class I used as data object in my code. It basically contains getter and setter methods.
Tracking.java
-------------
**
package nice.work.attendance_tracking;
public class Tracking {
private Long mob_no;
private String client_id;
private String emp_id;
private String cloud_id;
// adding 5 new fields for testing
private String datetime;
private Integer event_id;
private String event_name;
private String remarks;
private String spinner_txt;
public Long getmobno() {
return mob_no;
}
public void setmobno(long mob_no) {
this.mob_no = mob_no;
}
public String getclientid() {
return client_id;
}
public void setclientid(String client_id) {
this.client_id = client_id;
}
public String getempid() {
return emp_id;
}
public void setempid(String emp_id) {
this.emp_id = emp_id;
}
public String getcloudid() {
return cloud_id;
}
public void setcloudid(String cloud_id) {
this.cloud_id = cloud_id;
}
// added new methods for testing
public String getdatetime() {
return datetime;
}
public void setdatetime(String datetime) {
this.datetime = datetime;
}
public Integer geteventid() {
return event_id;
}
public void seteventid(int event_id) {
this.event_id = event_id;
}
public String geteventname() {
return event_name;
}
public void seteventname(String event_name) {
this.event_name = event_name;
}
public String getremarks() {
return remarks;
}
public void setremarks(String remarks) {
this.remarks = remarks;
}
public String getspinnertxt() {
return spinner_txt;
}
public void setspinnertxt(String spinner_txt) {
this.spinner_txt = spinner_txt;
}
}
**
This is the main activity file which is also the first activity to get called by my application.
MainActivity.java
-----------------
**
package nice.work.attendance_tracking;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener{
private EditText editmobno;
private EditText editclientid;
private EditText editempid;
private EditText editcloudid;
private Button submit;
private ArrayList<Tracking> TrackingObjArrayList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editmobno=(EditText)findViewById(R.id.editxt_mbno);
editclientid=(EditText)findViewById(R.id.editxt_clientid);
editempid=(EditText)findViewById(R.id.editxt_empid);
editcloudid=(EditText) findViewById(R.id.editxt_cloudid);
submit=(Button)findViewById(R.id.sbmt_btn);
submit.setOnClickListener(this);
TrackingObjArrayList = new ArrayList<Tracking>();
}
public void onClick(View v)
{
if(v.getId()==R.id.sbmt_btn)
{
// Get the values provided by the user via the UI
Long providedmobno = Long.parseLong(editmobno.getText().toString());
String providedclientid = editclientid.getText().toString();
String providedempid = editempid.getText().toString();
String providedcloudid = editcloudid.getText().toString();
// Pass above values to the setter methods in POJO class
Tracking TrackingObj = new Tracking();
TrackingObj.setmobno(providedmobno);
TrackingObj.setclientid(providedclientid);
TrackingObj.setempid(providedempid);
TrackingObj.setcloudid(providedcloudid);
// Add an undergraduate with his all details to a ArrayList
TrackingObjArrayList.add(TrackingObj);
// Inserting tracking details to the database is doing in a separate method
insertTracking(TrackingObj);
// Release from the existing UI and go back to the previous UI
finish();
Intent i = new Intent(MainActivity.this,Transaction.class);
startActivity(i);
}
}
public void insertTracking(Tracking paraTrackingObj){
// First we have to open our DbHelper class by creating a new object of that
AssetDatabaseOpenHelper androidOpenDbHelperObj = new AssetDatabaseOpenHelper(this);
// Then we need to get a writable SQLite database, because we are going to insert some values
// SQLiteDatabase has methods to create, delete, execute SQL commands, and perform other common database management tasks.
SQLiteDatabase sqliteDatabase = androidOpenDbHelperObj.getWritableDatabase();
// ContentValues class is used to store a set of values that the ContentResolver can process.
ContentValues contentValues = new ContentValues();
// Get values from the Tracking class and passing them to the ContentValues class
contentValues.put(AssetDatabaseOpenHelper.COLUMN_NAME_MOB_NO, paraTrackingObj.getmobno());
contentValues.put(AssetDatabaseOpenHelper.COLUMN_NAME_CLIENT_ID, paraTrackingObj.getclientid());
contentValues.put(AssetDatabaseOpenHelper.COLUMN_NAME_EMPLOYEE_ID, paraTrackingObj.getempid());
contentValues.put(AssetDatabaseOpenHelper.COLUMN_NAME_CLOUD_ID, paraTrackingObj.getcloudid());
// Now we can insert the data in to relevant table
// I am going pass the id value, which is going to change because of our insert method, to a long variable to show in Toast
long affectedColumnId = sqliteDatabase.insert(AssetDatabaseOpenHelper.TABLE_NAME, null, contentValues);
// It is a good practice to close the database connections after you have done with it
sqliteDatabase.close();
// I am not going to do the retrieve part in this post. So this is just a notification for satisfaction ;-)
Toast.makeText(this, "Values inserted column ID is :" + affectedColumnId, Toast.LENGTH_SHORT).show();
}
}
**
This is my database activity file which contains all database code which will be done at back end.
AssetDatabaseOpenHelper.java
----------------------------
**
package nice.work.attendance_tracking;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.BaseColumns;
public class AssetDatabaseOpenHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "Attendance.sqlite";
public static final int DB_VERSION = 1;
// Labels table name
private static final String TABLE_LABELS = "Event";
// Labels Table Columns names
// private static final String KEY_ID = "Event_id";
// private static final String KEY_NAME = "Event_Name";
// Table attributes
public static final String TABLE_NAME = "Param_Value";
public static final String COLUMN_NAME_MOB_NO = "Mob_no";
public static final String COLUMN_NAME_CLIENT_ID = "Client_id";
public static final String COLUMN_NAME_EMPLOYEE_ID = "Emp_id";
public static final String COLUMN_NAME_CLOUD_ID = "Cloud_id";
// added additional fields for testing purpose
public static final String TABLE_NAMES = "Transaction_Table";
public static final String COLUMN_NAME_DATETIME = "DateTime";
public static final String COLUMN_NAME_EVENT_ID = "Event_id";
public static final String COLUMN_NAME_EVENT_NAME = "Event_name";
public static final String COLUMN_NAME_REMARKS = "Remarks";
private Context context;
// public AssetDatabaseOpenHelper(Context context) {
// this.context = context;
//}
public AssetDatabaseOpenHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}
public SQLiteDatabase openDatabase() {
File dbFile = context.getDatabasePath(DB_NAME);
if (!dbFile.exists()) {
try {
copyDatabase(dbFile);
} catch (IOException e) {
throw new RuntimeException("Error creating source database", e);
}
}
return SQLiteDatabase.openDatabase(dbFile.getPath(), null, SQLiteDatabase.OPEN_READONLY);
}
private void copyDatabase(File dbFile) throws IOException {
InputStream is = context.getAssets().open(DB_NAME);
OutputStream os = new FileOutputStream(dbFile);
byte[] buffer = new byte[1024];
while (is.read(buffer) > 0) {
os.write(buffer);
}
os.flush();
os.close();
is.close();
}
public void onCreate(SQLiteDatabase db) {
// We need to check whether table that we are going to create is already exists.
//Because this method get executed every time we created an object of this class.
//"create table if not exists TABLE_NAME (BaseColumns._ID integer primary key autoincrement, FIRST_COLUMN_NAME text not null, SECOND_COLUMN_NAME integer not null);"
String sqlQueryToCreateTrackingTable = "create table if not exists " + TABLE_NAME + " (" + BaseColumns._ID + " integer primary key autoincrement, "
+ COLUMN_NAME_MOB_NO + " integer not null, "
+ COLUMN_NAME_CLIENT_ID + " text not null, "
+ COLUMN_NAME_EMPLOYEE_ID + " text not null, "
+ COLUMN_NAME_CLOUD_ID + " integer not null);";
// Execute a single SQL statement that is NOT a SELECT or any other SQL statement that returns data.
db.execSQL(sqlQueryToCreateTrackingTable);
}
// onUpgrade method is use when we need to upgrade the database in to a new version
//As an example, the first release of the app contains DB_VERSION = 1
//Then with the second release of the same app contains DB_VERSION = 2
//where you may have add some new tables or alter the existing ones
//Then we need check and do relevant action to keep our pass data and move with the next structure
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if(oldVersion == 1 && newVersion == 2){
// Upgrade the database
}
}
/**
* Getting all labels
* returns list of labels
* */
public List<String> getAllLabels(){
List<String> labels = new ArrayList<String>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_LABELS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
labels.add(cursor.getString(1));
} while (cursor.moveToNext());
}
// closing connection
cursor.close();
db.close();
// returning lables
return labels;
}
}
LOGCAT AFTER I RAN APP ON DEVICE AND IT FORCE CLOSED
11-12 11:55:49.880: E/AndroidRuntime(9972): FATAL EXCEPTION: main
11-12 11:55:49.880: E/AndroidRuntime(9972): java.lang.RuntimeException: Unable to start activity ComponentInfo{nice.work.attendance_tracking/nice.work.attendance_tracking.Transaction}: android.database.sqlite.SQLiteException: no such table: Event (code 1): , while compiling: SELECT * FROM Event
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread.access$600(ActivityThread.java:156)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.os.Looper.loop(Looper.java:153)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread.main(ActivityThread.java:5297)
11-12 11:55:49.880: E/AndroidRuntime(9972): at java.lang.reflect.Method.invokeNative(Native Method)
11-12 11:55:49.880: E/AndroidRuntime(9972): at java.lang.reflect.Method.invoke(Method.java:511)
11-12 11:55:49.880: E/AndroidRuntime(9972): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
11-12 11:55:49.880: E/AndroidRuntime(9972): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
11-12 11:55:49.880: E/AndroidRuntime(9972): at dalvik.system.NativeStart.main(Native Method)
11-12 11:55:49.880: E/AndroidRuntime(9972): Caused by: android.database.sqlite.SQLiteException: no such table: Event (code 1): , while compiling: SELECT * FROM Event
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:886)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:497)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1253)
11-12 11:55:49.880: E/AndroidRuntime(9972): at nice.work.attendance_tracking.AssetDatabaseOpenHelper.getAllLabels(AssetDatabaseOpenHelper.java:116)
11-12 11:55:49.880: E/AndroidRuntime(9972): at nice.work.attendance_tracking.Transaction.loadSpinnerData(Transaction.java:57)
11-12 11:55:49.880: E/AndroidRuntime(9972): at nice.work.attendance_tracking.Transaction.onCreate(Transaction.java:43)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.Activity.performCreate(Activity.java:5122)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
11-12 11:55:49.880: E/AndroidRuntime(9972): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
11-12 11:55:49.880: E/AndroidRuntime(9972): ... 11 more
ссылка База данных: http://d-h.st/JKy
Я могу видеть базы данных создается при использовании эмулятора через затмение DDMS перспективы. Но когда я использую adb shell ls /data/data/nice.work.attendance_tracking/databases/, я всегда получаю устройство в автономном режиме, даже несмотря на то, что мое приложение работает в эмуляторе.
Кроме того, мне нужно знать, есть ли какие-либо проблемы в моем коде базы данных. Но значения сохраняются в моей базе данных при запуске приложения на эмуляторе. Пока приложение закрывается на реальном устройстве при нажатии submit (после чего значения должны сохраняться в таблицах базы данных).
1. Удалите приложение из устройства. 2. Перезагрузите устройство 3. И затем установите свое приложение –
таблицу изменений и имя базы данных и проверьте ее. – Mohan
Pankaj, я пробовал ваши предложения, но эта же проблема сохраняется. – user2285161