我试图从我的数据库获取数据,但是当我这样做时应用程序崩溃。当我尝试从数据库获取所有项目时,应用程序崩溃
请检查我的代码,并帮助我,我试图解决它,但我找不到有什么问题。
这就是我试图挽救:
public class SinglePet {
private String name;
private Bitmap photo;
private String task1;
private String task2;
private String task3;
private long id;
public SinglePet(String name, Bitmap photo, String task1, String task2, String task3, long id) {
this.name = name;
this.photo = photo;
this.task1 = task1;
this.task2 = task2;
this.task3 = task3;
this.id = id;
}
//and getter and setter...
这是我的数据库:
公共类MyPetsOpenHelper扩展SQLiteOpenHelper {
public static final String DATABASENAME="pets.db";
public static final String TABLE_MYPETS="tblmypets";
public static final int DATABASEVERSION=1;
public static final String COLUMN_ID="id";
public static final String COLUMN_IMAGE="image";
public static final String COLUMN_NAME="name";
public static final String COLUMN_TASK1="task1";
public static final String COLUMN_TASK2="task2";
public static final String COLUMN_TASK3="task3";
private static final String CREATE_TABLE_MYPETS="CREATE TABLE IF NOT EXISTS " +
TABLE_MYPETS + "(" + COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_NAME + " VARCHAR," + COLUMN_IMAGE + " BLOB,"
+ COLUMN_TASK1 + " VARCHAR," + COLUMN_TASK2 + " VARCHAR," + COLUMN_TASK3 + " VARCHAR" + ");";
String [] allColumns={MyPetsOpenHelper.COLUMN_ID, MyPetsOpenHelper.COLUMN_NAME, MyPetsOpenHelper.COLUMN_IMAGE,
MyPetsOpenHelper.COLUMN_TASK1, MyPetsOpenHelper.COLUMN_TASK2, MyPetsOpenHelper.COLUMN_TASK3};
SQLiteDatabase database;
public MyPetsOpenHelper(Context context)
{
super(context, DATABASENAME, null, DATABASEVERSION);
}
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_TABLE_MYPETS);
Log.d("data", "Table MyPets is created");
}
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS" + TABLE_MYPETS);
onCreate(db);
}
public void open()
{
database=this.getWritableDatabase();
Log.d("data", "database connection open");
}
//QUERIES
public SinglePet createSinglePet(SinglePet s)
{
ContentValues values= new ContentValues();
values.put(COLUMN_NAME, s.getName());
Bitmap b=s.getPhoto();
values.put(COLUMN_IMAGE,PhotoHelper.bitmapToString(b));
values.put(COLUMN_TASK1, s.getTask1());
values.put(COLUMN_TASK2, s.getTask2());
values.put(COLUMN_TASK3, s.getTask3());
long insertId=database.insert(TABLE_MYPETS, null, values);
Log.d("data", "MyPets " + insertId + " insert to database");
s.setId(insertId);
return s;
}
当我尝试运行此功能( getAll())应用程序崩溃!
public ArrayList<SinglePet> getAll()
{
ArrayList<SinglePet> l= new ArrayList<SinglePet>();
Cursor cursor=database.query(MyPetsOpenHelper.TABLE_MYPETS, allColumns, null, null, null, null, null);
if(cursor.getCount()>0)
{
while (cursor.moveToNext())
{
long id= cursor.getLong(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_ID));
String name= cursor.getString(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_NAME));
byte [] image= cursor.getBlob(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_IMAGE));
Bitmap imageB= PhotoHelper.byteArrayTBitmap(image);
String task1= cursor.getString(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_TASK1));
String task2= cursor.getString(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_TASK2));
String task3= cursor.getString(cursor.getColumnIndex(MyPetsOpenHelper.COLUMN_TASK3));
SinglePet s=new SinglePet(name, imageB , task1, task2, task3, id);
l.add(s);
}
}
return l;
// and the rest of the class doesn't matter...
的问题是,当我写东西喜欢 -
列表= myPetsOpenHelper.getAll();
该应用程序崩溃了!
PLEASE HELP ME
完整跟踪:
04-14 15:46:49.913 11231-11231/com.example.admin.petcare I /数据:表大小为0 04-14 15 :46:49.933 11231-11231/com.example.admin.petcare D/data:数据库连接打开 04-14 15:46:49.983 11231-11231/com.example.admin.petcare E/SQLiteLog:(1)table tblmypets没有名为task2的列 04-14 15:46:49.983 11231-11231/com.example.admin.petcare E/SQLiteDatabase:插入图像时出错= [B @ a5a2aa38 task1 = task1 task2 = task2 task3 = task3 name = example android.databa sesqlite.SQLiteException:表tblmypets没有名为task2的列(代码1):,编译时:INSERT INTO tblmypets(image,task1,task2,task3,name)VALUES(?,?,?,?,?) at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889) at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500) at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) at android.database.sqlite.SQLiteProgram。(SQLiteProgram.java:58) at android.database.sqlite.SQLiteStatement。(SQLiteStatement.java:31 )在android上的 (SQLiteDatabase.java:1339) at com.example.admin.petcare.MyPetsOpenHelper.createSinglePet(MyPetsOpenHelper.java(SQLiteDatabase.java:1339) :74) at com.example.admin.petcare.MyPetsActivity.examplePet(MyPetsActivity.java:182) at com.example.admin.petcare.MyPetsActivity.onCreate(MyPetsActivity.java:68) at android.app.Activity .performCreate(Activity.java:5133) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175) 在android.app.ActivityThread。在android.app.ActivityThread.access处理HandlerLaunchActivity(ActivityThread.java:2261) $ 600(ActivityThread.java:141) at android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1256) at android.os.Handler .dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5103) at java.lang.reflect.Method .invokeNative(本地方法) 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) 在dalvik.system.NativeStart.main(本机方法) 04-14 15:46:49.983 11231-11231/com.example.admin.petcare d /数据:MyPets -1插入到数据库 04-14 15:46:49.993 11231-11231/com.example.admin.petcare d /数据:数据库连接开放 04-14 15:46:49.993 11231-11231/com.example.admin.petcare E/SQLiteLog:(1)没有这样的柱:TASK2 04-14 15:46:49.993 11231-11231/com.example.admin.petcare d/AndroidRuntime:关闭VM 04-14 15:46:49.993 11231-11231/com.example.admin.petcare W/dalvikvm:线程ID = 1:螺纹与未捕获的异常退出(组= 0xa4fdc678) 04-14 15:46:50.003 11231-11231/com。示例.admin.petcare E/AndroidRuntime:致命例外:main java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.admin.petcare/com.example.admin.petcare.MyPetsActivity}:android.database.sqlite.SQLiteException:no such column:task2(code 1):,当编译:SELECT id,name,image,task1,task2,task3 FROM t.t.在android.app.ActivityThread.access $ 600(ActivityThread.java:141) 在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1256) 在android.os.Handler.dispatchMessage(Handler.java:99) 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 (本机方法) 所致:android.database.sqlite.SQLiteException:没有这样的柱:TASK2(码1):在编译:SELECT ID,名称,图像,任务1,任务2,TASK3 FROM在android.database tblmypets 。 sqlite.SQLiteConnection.nativePrepareStatement(母语方法)at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889) at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500) at android.database.sqlite.SQLiteSession.prepare( SQLiteSession.java:588) at android.database.sqlite.SQLiteProgram。(SQLiteProgram.java:58) at android.database.sqlite.SQLiteQuery。(SQLiteQuery.java:37) at android.database.sqlite.SQLiteDirectCursorDriver。 query(SQLiteDirectCursorDriver.java:44) at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314) at android.database.sqlite。SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161) at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032) at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1200) at com。 example.admin.petcare.MyPetsOpenHelper.getAll(MyPetsOpenHelper.java:83) at com.example.admin.petcare.MyPetsActivity.onCreate(MyPetsActivity.java:72) at android.app.Activity.performCreate(Activity.java: 5133) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175) at android.app。在android.app.ActivityThread.access $ 600(ActivityThread.java:141) at android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1256) at android.os .Handler.dispatchMessage(Handler.java:99) 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)W/ActivityManager/at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method) 04-14 15:46:50.013 1460-1460/system_process W/ActivityManager :强制整理活动com.example.admin.petcare/.MyPetsActivity 04-14 15:46:50.343 1974-11625/com.google.android.gms D/DropBoxEntryAddedChimeraService:用户未选择使用& Diagnostics或Lockbox 。 04-14 15:46:50.523 1460-1477/system_process W/ActivityManager:ActivityRecord的活动暂停超时{a5642da0 u0 com.example.admin.petcare/.MyPetsActivity} 04-14 15:46:59.723 1460-1477/system_process W/ActivityManager:启动超时已过,放弃唤醒锁定! 04-14 15:46:59.743 1460-1477/system_process W/ActivityManager:ActivityRecord的活动空闲超时{a5642da0 u0 com.example.admin.petcare/.MyPetsActivity} 04-14 15:47:00.533 1460-1477/system_process W/ActivityManager:ActivityRecord的活动空闲超时{a54c27e0 u0 com.example.admin.petcare/.MainActivity} 04-14 15:47:04.733 1460-1477/system_process W/ProcessStats:跳过未知进程pid 11730 04- 14 15:47:09.753 1460-1477/system_process W/ActivityManager:ActivityRecord的活动销毁超时{a5642da0 u0 com.example.admin.petcare/.MyPetsActivity} 04-14 15:48:19.403 1460-1477/system_process W/BroadcastQueue:广播超时时间BroadcastRecord {a572c658 u0 com.google.firebase.INSTANCE_ID_EVENT} - [email protected],已启动60021ms ago 04-14 15:48:1940 14 60-1477/system_process W/BroadcastQueue:超时期间的接收方:ResolveInfo {a572cb00 com.google.firebase.iid.FirebaseInstanceIdInternalReceiver p = 0 o = 0 m = 0x0} 04-14 15:48:19.433 1460-1477/system_process I/ActivityManager:崩溃应用程序跳过ANR:ProcessRecord {a5637df0 11231:com.example.admin.petcare/u0a10050}广播的意图{act = com.google.firebase.INSTANCE_ID_EVENT flg = 0x14 cmp = com.example.admin.petcare/com .google.firebase.iid.FirebaseInstanceIdInternalReceiver(有额外功能)}
写你的调用堆栈 – Vyacheslav
请发布你的崩溃日志 –
做到了(我编辑了我的帖子) – Meow