我不知道如何做到这一点。我尝试使用数组，但无法设法让它工作。甚至试图从数据库中获取ID然后将其传递给下一个活动，然后从数据库中调用它来获取文本，但是再次无法设法让它工作。我认为阵列是我的弱点。有人可以帮帮我吗？
在主要活动中有很多单词来自数据库，我需要在第二个活动中显示它们。你是怎么做到的？
以下是1.活动的代码：
public class Game extends Activity implements SensorEventListener {
int busy = 0;
int nagni = 0;
static TextView word;
private CountDownTimer countDownTimer;
private boolean timerHasStarted = false;
public TextView text;
private final long startTime = 60 * 1000;
private final long interval = 1 * 1000;
int cat4;
private SensorManager sManager;
Sensor accelerometer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
//senzor gibanja
sManager = (SensorManager) getSystemService(SENSOR_SERVICE);
accelerometer=sManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
sManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
text = (TextView) this.findViewById(R.id.timer2);
countDownTimer = new MyCountDownTimer(startTime, interval);
text.setText(text.getText() + String.valueOf(startTime / 1000));
Intent intent = getIntent();
cat4 = intent.getIntExtra("cat3", 0);
// Font path
String fontPath = "AdventureRR.otf";
// text view label
TextView ourText3 = (TextView) findViewById(R.id.textView3);
// Loading Font Face
Typeface tf = Typeface.createFromAsset(getAssets(), fontPath);
// Applying font
ourText3.setTypeface(tf);
set();
countDownTimer.start();
timerHasStarted = true;
}
@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_game, 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 set(){
SQLiteDatabase db;
String que = "";
db=openOrCreateDatabase("baza.db",MODE_PRIVATE, null);
Cursor cd=db.rawQuery("SELECT * FROM question WHERE cat=" + cat4 + " AND used = 1", null);
cd.moveToFirst();
que=cd.getString(cd.getColumnIndex("text"));
//patch
String id2=(cd.getString(cd.getColumnIndex("id")));
int idd2=Integer.parseInt(id2);
db.execSQL("UPDATE question SET used=0 WHERE id ="+idd2+";");
word = (TextView) findViewById(R.id.textView3);
word.setText("");
word.setText(que);
db.close();
busy = 0;
}
@Override
public void onSensorChanged(SensorEvent event) {
//else it will output the Roll, Pitch and Yawn values
if (event.values[2]>8){
if (busy == 0){
if (nagni == 0){
Intent i = new Intent(this,Pass.class);
startActivityForResult(i, 1);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 1000ms
set();
}
}, 1000);
}
}
busy = 1;
}
else if(event.values[2]<-8){
if (busy == 0){
if (nagni == 0){
Intent i = new Intent(this,Correct.class);
startActivityForResult(i, 1);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
//Do something after 1000ms
set();
}
}, 1000);
}
}
busy = 1;
}
else{
busy = 0;
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public class MyCountDownTimer extends CountDownTimer {
public MyCountDownTimer(long startTime, long interval) {
super(startTime, interval);
}
@Override
public void onFinish() {
text.setText("END!");
nagni=1;
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(Game.this, Results.class);
startActivity(i);
}
}, 1500);
}
@Override
public void onTick(long millisUntilFinished) {
if (millisUntilFinished>10000){
text.setText("0:" + millisUntilFinished / 1000);
}
else if (millisUntilFinished<10000){
text.setText("0:0" + millisUntilFinished / 1000);
}
}
}
@Override
public void onBackPressed() {
// do nothing.
}
}
这是我的2.活动：
public class Results extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_results);
final ImageButton one = (ImageButton) findViewById(R.id.imageButton);
final ImageButton two = (ImageButton) findViewById(R.id.imageButton2);
one.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent= new Intent(Results.this, Main.class);
startActivity(intent);
}
});
two.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent= new Intent(Results.this, Instructions.class);
startActivity(intent);
}
});
// Font path
String fontPath = "AdventureRR.otf";
// text view label
TextView ourText = (TextView) findViewById(R.id.textView);
// Loading Font Face
Typeface tf = Typeface.createFromAsset(getAssets(), fontPath);
// Applying font
ourText.setTypeface(tf);
}
@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_results, 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);
}
@Override
public void onBackPressed() {
// do nothing.
}
答案 0 :(得分：1)
启动意向添加列表的下一个活动时如下
intent.putStringArrayListExtra("data", list);
并在下一个活动中使用它，如下所示
getIntent().getStringArrayListExtra("data");
希望这会对你有所帮助。
答案 1 :(得分：0)
您应该在第一个活动中使用intent.putExtra，在第二个活动中使用intent.getExtra()
以下是一个例子：
<强>活性1
intent.putExtra(tag, stringArray);
<强>活性2
getIntent().getExtras().getStringArray(key);