[英]Incrementing counter in LinkedHashMap foreach Loop java android
[英]Counter not incrementing for radio button in android
我正在使用if語句來增加android中的測驗應用程序的答案。 我認為for循環或while循環應該會更好。 但是我也對此進行了測試。 現在好起來了。
下面是我的代碼。 謝謝
package newton.quizapplication;
import android.app.Activity;
import android.database.CursorJoiner;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
public class MyActivity extends Activity {
private RadioGroup radioGroup1;
private RadioGroup radioGroup2;
private RadioGroup radioGroup3;
private RadioButton radioButton1;
private RadioButton radioButton2;
private RadioButton radioButton3;
private Button btnSubmit;
private int Ans = 0;
private TextView Total;
// private int錯誤= 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
String All;
Total = (TextView)findViewById(R.id.Score);
addListenerOnButton();
}
public void addListenerOnButton() {
radioGroup1 = (RadioGroup) findViewById(R.id.rg1);
radioGroup2 = (RadioGroup) findViewById(R.id.rg2);
radioGroup2 = (RadioGroup) findViewById(R.id.rg3);
btnSubmit = (Button) findViewById(R.id.submit);
btnSubmit.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// get selected radio button from radioGroup
int selectedId1 = radioGroup1.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioButton1 = (RadioButton) findViewById(selectedId1);
// get selected radio button from radioGroup
int selectedId2 = radioGroup1.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioButton2 = (RadioButton) findViewById(selectedId2);
// get selected radio button from radioGroup
int selectedId3 = radioGroup1.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioButton3 = (RadioButton) findViewById(selectedId3);
if (radioButton1.getText().equals("Hyper Text Markup Language")) {
Ans++;
}
else if (radioButton2.getText().equals("The World Wide Web Consortium")) {
// Toast.makeText(MyActivity.this, "Incorrect Answer", Toast.LENGTH_SHORT).show();
Ans++;
}
else if (radioButton2.getText().equals("Specific places within a particular page")) {
Ans++;
}
Total.setText("You Got " + Ans + " Answer correct out of 3");
Ans =0;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.my, 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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
您應該將條件更改為:
if (radioButton1.getText().equals("Hyper Text Markup Language")) {
Ans++;
}
if (radioButton2.getText().equals("The World Wide Web Consortium")) {
// Toast.makeText(MyActivity.this, "Incorrect Answer", Toast.LENGTH_SHORT).show();
Ans++;
}
if (radioButton3.getText().equals("Specific places within a particular page")) {
Ans++;
}
在if (...) ... else if (...) ... else if (...) ...
的原始代碼中,只能滿足一個條件(因為條件第一次評估為是,則不會檢查其他條件),因此Ans只能為0或1。
另外,我假設您的最后一個是否應該檢查radioButon3
。
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