[英]Com.example path with errors
当我在 google play 上发布 apk 时,我不得不使用不同的 package 名称,原因是“com.example”。 我试过了,在测试应用程序后我崩溃了。 在此之前一切正常。 我可以发送清单。
有我的错误。
我的课程
详情.java
public class Details extends AppCompatActivity {
NoteDatabase db;
Note note;
TextView mDetails;
TextView clientDetails;
TextView timeDetails;
TextView nameDetails;
TextView detailsDetails;
ImageView noteDetails;
private Bitmap getImageFromByte(byte[] zdjecie){
return BitmapFactory.decodeByteArray(zdjecie, 0, zdjecie.length);
}
@SuppressLint("WrongThread")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_details);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mDetails = findViewById(R.id.detailsOfNote);
mDetails.setMovementMethod(new ScrollingMovementMethod());
clientDetails = findViewById(R.id.clientOfNote);
timeDetails = findViewById(R.id.timeofNote);
nameDetails = findViewById(R.id.nameOfNote);
detailsDetails = findViewById(R.id.detailsOfNote);
noteDetails = findViewById(R.id.noteImage);
Intent i = getIntent();
Long id = i.getLongExtra("ID", 0);
db = new NoteDatabase(this);
note = db.getNote(id);
getSupportActionBar().setTitle(note.getTitle());
mDetails.setText(note.getContent());
clientDetails.setText(note.getTitle());
timeDetails.setText(note.getTime());
nameDetails.setText(note.getName());
detailsDetails.setText(note.getDetails());
noteDetails.setImageBitmap(stringToImage(note.getImage()));
Toast.makeText(this, "Podgląd klienta", Toast.LENGTH_SHORT).show();
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
db.deleteNote(note.getID());
Toast.makeText(getApplicationContext(), "Klient usunięty", Toast.LENGTH_SHORT).show();
startActivity(new Intent(getApplicationContext(),klienci.class));
}
});
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.edit_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
if(item.getItemId() == R.id.editNote){
Toast.makeText(this, "Edytowanie notatki", Toast.LENGTH_SHORT).show();
Intent i = new Intent(this,Edit.class);
i.putExtra("ID",note.getID());
startActivity(i);
}
return super.onOptionsItemSelected(item);
}
private void goToMain() {
Intent i = new Intent(this,klienci.class);
startActivity(i);
}
private Bitmap stringToImage(String imgString){
byte[] decodedString = Base64.decode(imgString,Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString,0,decodedString.length);
return decodedByte;
}
注意数据库.java
public class NoteDatabase extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 42;
private static final String DATABASE_NAME = "notedbs";
private static final String DATABASE_TABLE = "notestables";
private static final String KEY_ID = "id";
private static final String KEY_TITLE = "title";
private static final String KEY_CONTENT = "content";
private static final String KEY_DATE = "date";
private static final String KEY_TIME = "time";
private static final String KEY_PHONE = "phone";
private static final String KEY_CLIENT = "client";
private static final String KEY_DETAILS = "details";
private static final String KEY_IMAGE = "image";
NoteDatabase(Context context) {
super(context, DATABASE_NAME,null,DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String query = "CREATE TABLE "+ DATABASE_TABLE + "("+ KEY_ID+" INT PRIMARY KEY,"+
KEY_TITLE + " TEXT,"+
KEY_CONTENT + " TEXT,"+
KEY_DATE + " TEXT,"+
KEY_TIME + " TEXT,"+
KEY_CLIENT + " TEXT,"+
KEY_DETAILS + " TEXT,"+
KEY_PHONE + " TEXT,"+
KEY_IMAGE + " TEXT"+")";
db.execSQL(query);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if(oldVersion >= newVersion)
return;
db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
onCreate(db);
}
public long addNote(Note note) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues c = new ContentValues();
c.put(KEY_TITLE,note.getTitle());
c.put(KEY_CONTENT,note.getContent());
c.put(KEY_PHONE,note.getPhone());
c.put(KEY_CLIENT,note.getClient());
c.put(KEY_DETAILS,note.getDetails());
c.put(KEY_DATE,note.getDate());
c.put(KEY_TIME,note.getTime());
c.put(KEY_IMAGE,note.getImage());
long ID = db.insert(DATABASE_TABLE,null, c);
Log.d("Inserted", "ID -> " + ID);
return ID;
}
public Note getNote(long id){
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(DATABASE_TABLE,new String[] {KEY_ID,KEY_TITLE,KEY_CONTENT,KEY_PHONE,KEY_CLIENT,KEY_DETAILS,KEY_DATE,KEY_TIME,KEY_IMAGE}, KEY_ID+"=?",
new String[]{String.valueOf(id)}, null, null,null);
if (cursor != null)
cursor.moveToFirst();
return new Note
(cursor.getLong(0)
,cursor.getString(1)
,cursor.getString(2)
,cursor.getString(3)
,cursor.getString(4)
,cursor.getString(5)
,cursor.getString(6)
,cursor.getString(7)
,cursor.getString(8));
}
public List<Note> getNotes() {
SQLiteDatabase db = this.getReadableDatabase();
List<Note> allNotes = new ArrayList<>();
String query = "SELECT * FROM " + DATABASE_TABLE + " ORDER BY "+KEY_TITLE+" ASC";
Cursor cursor = db.rawQuery(query,null);
if(cursor.moveToFirst()){
do{
Note note = new Note();
note.setID(cursor.getLong(0));
note.setTitle(cursor.getString(1));
note.setDetails(cursor.getString(2));
note.setPhone(cursor.getString(3));
note.setClient(cursor.getString(4));
note.setContent(cursor.getString(5));
note.setDate(cursor.getString(6));
note.setTime(cursor.getString(7));
note.setImage(cursor.getString(8));
allNotes.add(note);
}while(cursor.moveToNext());
}
return allNotes;
}
public int editNote(Note note){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues c = new ContentValues();
Log.d("Edited", "Edited Title: -> "+ note.getTitle() + "\n ID -> "+note.getZdjecie());
c.put(KEY_TITLE,note.getTitle());
c.put(KEY_CONTENT,note.getContent());
c.put(KEY_PHONE,note.getPhone());
c.put(KEY_CLIENT,note.getClient());
c.put(KEY_DETAILS,note.getDetails());
c.put(KEY_DATE,note.getDate());
c.put(KEY_TIME,note.getTime());
c.put(KEY_IMAGE,note.getImage());
return db.update(DATABASE_TABLE,c,KEY_ID +"=?",new String[]{String.valueOf(note.getID())});
}
void deleteNote(long id) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(DATABASE_TABLE, KEY_ID + "=?", new String[]{String.valueOf(id)});
db.close();
}
您正在尝试在数据库中获取 0 索引。 每次添加新的 Note 时,它的 ID 都将为 0。因此,将数据库KEY_ID更改为 AUTOINCREMENT。
String query = "CREATE TABLE " + DATABASE_TABLE + "(" + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
KEY_TITLE + " TEXT," +
KEY_CONTENT + " TEXT," +
KEY_DATE + " TEXT," +
KEY_TIME + " TEXT," +
KEY_PIES + " TEXT," +
KEY_RASAPSA + " TEXT," +
KEY_TEL + " TEXT," +
KEY_ZDJECIE + " TEXT" + ")";
db.execSQL(query);
然后检查您的 cursor 而不是 null
获取笔记()
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.