// All required Imports
public class PuzzleActivity extends Activity implements OnClickListener{
private PuzzlerDB db;
private Puzzle puz;
private int puzId=1;
private String puzAns="";
private int score=0;
private TextView tvPuzContent;
private EditText etPuzAns;
private Button btnCheck;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
final boolean customTitleSupported = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.activity_puzzle);
if (customTitleSupported) {
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
}
db = new PuzzlerDB(this);
puz = db.getPuzzle(puzId);
puzAns = puz.getAnswer();
tvPuzContent = (TextView) findViewById(R.id.tv_puz_content);
tvPuzContent.setText(puz.getContent());
btnCheck = (Button) findViewById(R.id.btn_check);
btnCheck.setOnClickListener(this);
android.util.Log.v("IN SIDE ACTIVITY: ", "id: "+ puzId + " answer: "+puz.getAnswer());
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_check:
checkAndNotify(puzAns);
break;
}
}
private void checkAndNotify(String puzAns)
{
String ans = ((EditText)findViewById(R.id.te_puz_ans)).getText().toString();
if(ans.trim().equalsIgnoreCase(puzAns.trim()))
{
//show pop-up dialog for right answer
new AlertDialog.Builder(this).setTitle("The Puzzler:")
.setMessage("Wow! Right Answer!!")
.setNeutralButton("Continue", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dlg, int sumthin)
{
android.util.Log.v("IN SIDE function:", " onClick of Dialog");
update();
}
}).show();
}else{
new AlertDialog.Builder(this).setTitle("The Puzzler:")
.setMessage("Sorry! You have to rethink!!")
.setNeutralButton("Continue", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dlg, int sumthin)
{
// do nothing – it will close on its own
}
}).show();
}
}
protected void update() {
score = score + 10;
++puzId;
}
@Override
protected void onResume() {
super.onResume();
setContentView(R.layout.activity_puzzle);
puz = db.getPuzzle(puzId);
if(puz != null)
{
tvPuzContent.setText(puz.getContent());
android.util.Log.v("IN SIDE onResume:", " Content: "+ puz.getContent());
puzAns = puz.getAnswer();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
db.close();
}
}
活动布局如下:为什么setText()在TextView的以下代码中不起作用?
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bgimg"
android:layout_gravity="center">
<TableLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="20dp"
android:stretchColumns="*">
<TableRow>
<TextView android:id="@+id/tv_puz_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_span="3"
android:typeface="serif"
android:textStyle="bold"
android:textSize="20sp"
android:text="" />
</TableRow>
<TableRow>
<EditText android:id="@+id/te_puz_ans"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_span="3"
android:hint="Answer" />
</TableRow>
<TableRow android:gravity="center">
<Button android:id="@+id/btn_check"
android:layout_width="60dp"
android:layout_height="wrap_content"
android:hint="Check" />
<Button android:id="@+id/btn_skip"
android:layout_width="60dp"
android:layout_height="wrap_content"
android:hint="Skip" />
<Button android:id="@+id/btn_hint"
android:layout_width="60dp"
android:layout_height="wrap_content"
android:hint="Hint" />
</TableRow>
</TableLayout>
</LinearLayout>
的数据库查询返回正确的内容,我可以通过logcat的检查。但文本视图没有显示出来。EditText和按钮正在显示。 (i)使TextView静态(ii)接收字符串中的拼图内容,然后通过setText()和其他方式将其设置为不成功。你能否提出一个解决方案?
你在puz var中得到了什么吗? – Saqib
你在这个日志中得到什么? android.util.Log.v(“IN SIDE onResume:”,“Content:”+ puz.getContent()); – pozuelog
是的。 Puz拥有其所有数据成员的价值。我在上面的日志中获得了这个难题的内容,例如:'01 -23 22:28:17.937:V/IN SIDE onResume:(18673):内容:2 x 5的值是多少?' – Dexter