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私はMainActivityに2つのTextViewを持っており、最初のTextViewを自分の最高得点に変更できますが、2番目のTextViewを次の最高得点に変更することはできません（私はゲームを作っています）。私が悩んでいるコードは、DBHandlerクラスのupdateDatabase（）メソッドにあります。SQLiteを使って別のTextViewにジャンプするには？
MainActivity
public class MainActivity extends Activity {
//sqlite
//EditText input;
//first high score
static TextView productText;
static TextView productText2;
MyDBHandler dbHandler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//sqlite
//input = (EditText)findViewById(R.id.editText_ID);
productText = (TextView)findViewById(R.id.textView1);
productText2 = (TextView)findViewById(R.id.textView2);
//GameScreen gameScreen = new GameScreen();
dbHandler = new MyDBHandler(this, null, null, 1);
dbHandler.updateDatabase();
}
public void sendMessage(View view)
{
Intent intent = new Intent(MainActivity.this, GameScreen.class);
startActivity(intent);
}
}
GameActivity
public class GameScreen extends Activity {
private TextView time;
private ImageButton start;
private ImageButton gameButton;
private ImageButton button2;
private CountDownTimer countDownTimer;
public static int count = 0;
public static int countPass = 0;
public String countPassString = "";
MyDBHandler dbHandler;
//MainActivity mainActivity = new MainActivity();
final Handler handler = new Handler();
final Runnable r = new Runnable() {
public void run() {
cancel();
}
};
private View.OnClickListener btnClickListener = new View.OnClickListener(){
@Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.start_ID:
start();
break;
case R.id.gameButton_ID:
gameButton();
break;
case R.id.button2_ID:
button2();
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game_screen);
start = (ImageButton) findViewById(R.id.start_ID);
start.setOnClickListener(btnClickListener);
time = (TextView) findViewById(R.id.time);
gameButton = (ImageButton) findViewById(R.id.gameButton_ID);
gameButton.setOnClickListener(btnClickListener);
button2 = (ImageButton) findViewById(R.id.button2_ID);
button2.setOnClickListener(btnClickListener);
button2.setVisibility(View.GONE);
}
public void start(){
count = 0;
start.setVisibility(View.GONE);
time.setText("100");
//this doesnt work and makes app crash when you hit start button
countDownTimer = new CountDownTimer(100 * 1000, 1000) {
@Override
public void onTick(long millsUntilFinished){
time.setText("" + millsUntilFinished/1000);
//turns textview string to int
int foo = Integer.parseInt(time.getText().toString());
if(foo == 93) {
time.setVisibility(View.GONE);
button2.setVisibility(View.VISIBLE);
}
else if(foo == 97) {
gameButton.animate().translationX(200).setDuration(5000).start(); // move away
}
else if(foo == 90){
gameButton.animate().translationY(200).setDuration(5000).start(); // move away
}
if(foo % 2 == 0){
handler.postDelayed(r, 1000);
}
}
public void onFinish() {
start.setVisibility(View.VISIBLE);
time.setVisibility(View.VISIBLE);
time.setText("Done !");
//need to check if score will reset if you win the game
Toast.makeText(getApplicationContext(), "You scored " + count, Toast.LENGTH_LONG).show();
gameButton.clearAnimation();
gameButton.animate().translationX(0).setDuration(500).start(); //move back
gameButton.animate().translationY(0).setDuration(500).start(); //move back
button2.setVisibility(View.GONE);
}
};
countDownTimer.start();
}
private void cancel(){
if(countDownTimer != null){
countDownTimer.cancel();
countDownTimer = null;
start.setVisibility(View.VISIBLE);
time.setVisibility(View.VISIBLE);
gameButton.clearAnimation();
gameButton.animate().translationX(0).setDuration(500).start(); //move back
gameButton.animate().translationY(0).setDuration(500).start(); //move back
button2.setVisibility(View.GONE);
//holds score at end of game
countPass = count;
//reset score for new game
count = 0;
Toast.makeText(getApplicationContext(), "You scored " + countPass, Toast.LENGTH_LONG).show();
countPassString = Integer.toString(countPass);
dbHandler = new MyDBHandler(this, null, null, 1);
//mainActivity.productText.setText(countPassString);
dbHandler.addButtonClicked(countPassString);
}
}
private void gameButton(){
int foo = Integer.parseInt(time.getText().toString());
if(foo % 2 == 0) {
final Toast toast = Toast.makeText(getApplicationContext(), "+1", Toast.LENGTH_SHORT);
toast.show();
// makes +1 toast half a second
Handler gameButtonToastHandler = new Handler();
gameButtonToastHandler.postDelayed(new Runnable() {
@Override
public void run() {
toast.cancel();
}
}, 500);
handler.removeCallbacks(r);
++count;
}
else{
cancel();
}
}
private void button2(){
cancel();
}
}
DBHandler
public class MyDBHandler extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 4;
private static final String DATABASE_NAME = "products.db";
public static final String TABLE_PRODUCTS = "products";
public static final String COLUMN_ID = "_id";
public static final String COLUMN_PRODUCTNAME = "productname";
public MyDBHandler(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
super(context, DATABASE_NAME, factory, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String query = "CREATE TABLE " + TABLE_PRODUCTS + "(" +
COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
COLUMN_PRODUCTNAME + " TEXT " +
");";
db.execSQL(query);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_PRODUCTS);
onCreate(db);
}
//add a new row to the database
public void addProduct(Products product){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(COLUMN_PRODUCTNAME, product.get_productname());
db.insert(TABLE_PRODUCTS, null, values);
db.close();
}
//code coming from MainActivity
public void addButtonClicked(String highscore1){
Products product = new Products(highscore1);
addProduct(product);
updateDatabase();
}
//code coming from MainActivity
public void updateDatabase(){
if(MainActivity.productText.toString() == ""){
String dbString = databaseToString();
MainActivity.productText.setText(dbString);
}
else if(MainActivity.productText2.toString() == "2:"){
String dbString = databaseToString();
MainActivity.productText2.setText(dbString);
}
else{
String dbString = databaseToString();
MainActivity.productText.setText(dbString);
}
}
//delete a product from the database
public void deleteProduct(String productName){
SQLiteDatabase db = getWritableDatabase();
db.execSQL("DELETE FROM " + TABLE_PRODUCTS + " WHERE " + COLUMN_PRODUCTNAME + "=\"" + productName + "\";");
}
//print out the database as a string
public String databaseToString(){
String dbString = "";
SQLiteDatabase db = getWritableDatabase();
String query = "SELECT * FROM " + TABLE_PRODUCTS + " WHERE 1";
//Cursor point to location in your results
Cursor c = db.rawQuery(query, null);
//Move to the first row in your results
c.moveToFirst();
while(!c.isAfterLast()){
if(c.getString(c.getColumnIndex("productname")) != null){
dbString += c.getString(c.getColumnIndex("productname"));
dbString += "\n";
}
c.moveToNext();
}
db.close();
return dbString;
}
}
製品
public class Products {
private int _id;
private String _productname;
public Products(){
}
public Products(String productname){
this._productname = productname;
}
public void set_id(int _id) {
this._id = _id;
}
public void set_productname(String _productname) {
this._productname = _productname;
}
public int get_id() {
return _id;
}
public String get_productname() {
return _productname;
}
}
"以下のクエリのカーソルを取得する"とはどういう意味ですか？ –