在我的 Android 测验应用中，我实现了 Admob。但是每次给出答案并且问题发生变化时，Admob 也会刷新，这大约需要 3-4 秒。但到那时，问题再次发生变化，依此类推。
QuestionActivity.class：
package com.tsc.walkingdead;
import java.util.List;
import com.google.ads.*;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;
import com.tsc.walkingdead.R;
import com.tsc.walkingdead.quiz.GamePlay;
import com.tsc.walkingdead.quiz.Question;
import com.tsc.walkingdead.util.Utility;
public class QuestionActivity extends Activity implements OnClickListener{
private Question currentQ;
private GamePlay currentGame;
;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.question);
// Look up the AdView as a resource and load a request.
AdView adView = (AdView)this.findViewById(R.id.adView);
adView.loadAd(new AdRequest());
/**
* Configure current game and get question
*/
currentGame = ((WalkingDeadApplication)getApplication()).getCurrentGame();
currentQ = currentGame.getNextQuestion();
Button nextBtn = (Button) findViewById(R.id.nextBtn);
nextBtn.setOnClickListener(this);
/**
* Update the question and answer options..
*/
setQuestions();
}
/**
* Method to set the text for the question and answers from the current games
* current question
*/
private void setQuestions() {
//set the question text from current question
String question = Utility.capitalise(currentQ.getQuestion()) + "??";
TextView qText = (TextView) findViewById(R.id.question);
qText.setText(question);
//set the available options
List<String> answers = currentQ.getQuestionOptions();
TextView option1 = (TextView) findViewById(R.id.answer1);
option1.setText(Utility.capitalise(answers.get(0)));
TextView option2 = (TextView) findViewById(R.id.answer2);
option2.setText(Utility.capitalise(answers.get(1)));
TextView option3 = (TextView) findViewById(R.id.answer3);
option3.setText(Utility.capitalise(answers.get(2)));
TextView option4 = (TextView) findViewById(R.id.answer4);
option4.setText(Utility.capitalise(answers.get(3)));
}
@Override
public void onClick(View arg0) {
//Log.d("Questions", "Moving to next question");
/**
* validate a checkbox has been selected
*/
if (!checkAnswer()) return;
/**
* check if end of game
*/
if (currentGame.isGameOver()){
Intent i = new Intent(this, EndgameActivity.class);
startActivity(i);
finish();
}
else{
Intent i = new Intent(this, QuestionActivity.class);
startActivity(i);
finish();
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
switch (keyCode)
{
case KeyEvent.KEYCODE_BACK :
return true;
}
return super.onKeyDown(keyCode, event);
}
/**
* Check if a checkbox has been selected, and if it
* has then check if its correct and update gamescore
*/
private boolean checkAnswer() {
String answer = getSelectedAnswer();
if (answer==null){
//Log.d("Questions", "No Checkbox selection made - returning");
return false;
}
else {
//Log.d("Questions", "Valid Checkbox selection made - check if correct");
if (currentQ.getAnswer().equalsIgnoreCase(answer))
{
//Log.d("Questions", "Correct Answer!");
currentGame.incrementRightAnswers();
Toast.makeText(this, "Correct!", Toast.LENGTH_LONG).show();
}
else{
//Log.d("Questions", "Incorrect Answer!");
currentGame.incrementWrongAnswers();
Toast.makeText(this, "Wrong!", Toast.LENGTH_LONG).show();
}
return true;
}
}
/**
*
*/
private String getSelectedAnswer() {
RadioButton c1 = (RadioButton)findViewById(R.id.answer1);
RadioButton c2 = (RadioButton)findViewById(R.id.answer2);
RadioButton c3 = (RadioButton)findViewById(R.id.answer3);
RadioButton c4 = (RadioButton)findViewById(R.id.answer4);
if (c1.isChecked())
{
return c1.getText().toString();
}
if (c2.isChecked())
{
return c2.getText().toString();
}
if (c3.isChecked())
{
return c3.getText().toString();
}
if (c4.isChecked())
{
return c4.getText().toString();
}
return null;
}
}
问题.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/walking_dead_background2"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:gravity="center"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center">
<RadioGroup
android:id="@+id/group1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_vertical">
<TextView
android:id="@+id/question"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="@style/myStyle1"
android:layout_marginBottom="10dp"/>
<RadioButton
android:id="@+id/answer1"
android:checked="false"
style="@style/myStyle"/>
<RadioButton
android:id="@+id/answer2"
android:checked="false"
style="@style/myStyle"/>
<RadioButton
android:id="@+id/answer3"
android:checked="false"
style="@style/myStyle"/>
<RadioButton
android:id="@+id/answer4"
android:checked="false"
style="@style/myStyle"/>
<Button
android:id="@+id/nextBtn"
style="@style/myStyle"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="@drawable/button_selector"
android:paddingBottom="5dip"
android:paddingTop="5dip"
android:text="Next"
android:textColor="#ffffff" />
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="bottom"
android:id="@+id/mainLayout">
<com.google.ads.AdView android:id="@+id/adView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
ads:adUnitId="ca-app-pub-6195077402939893/2503837566"
ads:adSize="BANNER"
ads:testDevices="TEST_EMULATOR"/>
</LinearLayout>
</LinearLayout>
是否有可能让广告一直显示，尽管问题正在改变？
谢谢