① 新建项目
② 准备三张 png 图片
③ 在 string.xml 中添加要使用的字符串
④ 在 main.xml 中添加 UI 元素
ic_menu_close_clear_cancel.png right.png wrong.png
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Ex_Ctrl_6</string>
<string name="iam_Boy">帅哥</string>
<string name="iamGirl">美女</string>
<string name="ask">猜猜我是？？</string>
<string name="answer_Q">回答</string>
<string name="clean">清空</string>
<string name="showAnswerTitle_YES">恭喜!</string>
<string name="showAnswerTitle_NO">很遗憾!</string>
<string name="about_dialog_ok">OK</string>
<string name="right">您答对了!!</string>
<string name="wrong">哈哈，错误!</string>
<string name="answerIS">正确答案是：</string>
</resources>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/ask"
android:id="@+id/TextView_Ask_And_Show"
android:textSize="25px"/>
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⑤ 修改 mainActivity.java 文件
<RadioGroup
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/RadioGroup">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/RadioButton_Boy"
android:text="@string/iam_Boy">
</RadioButton>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/iamGirl"
android:id="@+id/RadioButton_Gril">
</RadioButton>
</RadioGroup>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/answer_The_Q_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/answer_Q"
></Button>
<Button
android:id="@+id/clean_The_Q_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/clean"
></Button>
</LinearLayout>
</LinearLayout>
package package package
package zyf.Ex_Ctrl_6;
import import import
import java.util.Random;
import import import
import android.app.Activity;
import import import
import android.app.AlertDialog;
import import import
import android.os.Bundle;
import import import
import android.view.Menu;
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import import import
import android.view.View;
import import import
import android.widget.Button;
import import import
import android.widget.RadioButton;
import import import
import android.widget.RadioGroup;
import import import
import android.widget.TextView;
import import import
import android.widget.Toast;
public public public
public classclassclassclass Ex_Ctrl_6 extendsextendsextendsextends Activity implementsimplementsimplementsimplements Button.OnClickListener {
/** Called when the activity is first created. */
private private private
private TextView answer_TextView;
private private private
private RadioButton boy_RadioButton, girl_RadioButton;
private private private
private RadioGroup radioGroup;
private private private
private Button answer_Button, clean_Button;
private private private
private String[] boy_girl;
private private private
private AlertDialog.Builder showRightorNot;
private private private
private MenuItem exit;
@Override public public public
public voidvoidvoidvoid onCreate(Bundle savedInstanceState) { super
super super
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/* 结果显示对话框 */
showRightorNot = newnewnewnew AlertDialog.Builder(thisthisthisthis);
/* findViewById()从XML中获取资源对象 */
answer_TextView = (TextView) findViewById(R.id.TextView_Ask_And_Show);
radioGroup = (RadioGroup) findViewById(R.id.RadioGroup);
boy_RadioButton = (RadioButton) findViewById(R.id.RadioButton_Boy);
girl_RadioButton = (RadioButton) findViewById(R.id.RadioButton_Gril);
answer_Button = (Button) findViewById(R.id.answer_The_Q_button);
clean_Button = (Button) findViewById(R.id.clean_The_Q_button);
/* 答案数组 */
boy_girl = newnewnewnew String[] { "Boy", "Girl","Boy", "Girl",
"Boy", "Girl","Boy", "Girl",
"Boy" };
/* 按钮设置成不可选 */
answer_Button.setEnabled(falsefalsefalsefalse);
clean_Button.setEnabled(falsefalsefalsefalse);
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/* 给单RadioGroup添加状态改变监听器 */
radioGroup.setOnCheckedChangeListener(newnewnewnew
RadioGroup.OnCheckedChangeListener() {
@Override public public public
public voidvoidvoidvoid onCheckedChanged(RadioGroup group,intintintint checkedId){
// TODOTODOTODOTODO Auto-generated method stub /* 判断显示 */
ifif
ifif (boy_RadioButton.isChecked()) {
answer_TextView.setText(R.string.iam_Boy);
} elseelseelseelse {
answer_TextView.setText(R.string.iamGirl);
} } });
boy_RadioButton.setOnClickListener(newnewnewnew RadioGroup.OnClickListener() {
@Override public public public
public voidvoidvoidvoid onClick(View v) {
// TODOTODOTODOTODO Auto-generated method stub /* 按钮设置成可选 */
answer_Button.setEnabled(truetruetruetrue);
clean_Button.setEnabled(truetruetruetrue);
} });
girl_RadioButton.setOnClickListener(newnewnewnew RadioGroup.OnClickListener() {
@Override public public public
public voidvoidvoidvoid onClick(View v) {
// TODOTODOTODOTODO Auto-generated method stub /* 按钮设置成可选 */
answer_Button.setEnabled(truetruetruetrue);
clean_Button.setEnabled(truetruetruetrue);
}
});
/* 设置按钮事件监听器 */
answer_Button.setOnClickListener(thisthisthisthis);
clean_Button.setOnClickListener(thisthisthisthis);
}
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public public public
public voidvoidvoidvoid onClick(View v) {
// TODOTODOTODOTODO Auto-generated method stub if
if if
if (v.getId() == R.id.answer_The_Q_button) { if
if if
if (boy_RadioButton.isChecked()) { checkTheAnswer("Boy");
} elseelseelseelse ifififif (girl_RadioButton.isChecked()) { checkTheAnswer("Girl");
} } ifif
ifif (v.getId() == R.id.clean_The_Q_button) { /* 按钮设置成未选取 */
boy_RadioButton.setChecked(falsefalsefalsefalse);
girl_RadioButton.setChecked(falsefalsefalsefalse);
/* 按钮设置成不可选 */
answer_Button.setEnabled(falsefalsefalsefalse);
clean_Button.setEnabled(falsefalsefalsefalse);
answer_TextView.setText(R.string.ask);
} }
private private private
private voidvoidvoidvoid checkTheAnswer(String checkstring) { // TODOTODOTODOTODO Auto-generated method stub
/*检测提示*/
Toast.makeText(thisthisthisthis, "检测答案…………", Toast.LENGTH_SHORT).show();
/*获取随机数*/
Random random = newnewnewnew Random();
int int int
int index = random.nextInt(9);
if if if
if (boy_girl[index].equals(checkstring)) { /*回答正确 ，设置提示对话框，显示结果*/
showRightorNot.setIcon(R.drawable.right);
showRightorNot.setTitle(R.string.showAnswerTitle_YES);
showRightorNot.setPositiveButton(R.string.about_dialog_ok, nullnullnullnull);
showRightorNot.setMessage(R.string.right).show();
Toast.makeText(thisthisthisthis,getString(R.string.answerIS)
+boy_girl[index],Toast.LENGTH_LONG).show();
} elseelseelseelse {
/*回答错误 ，设置提示对话框，显示结果*/
showRightorNot.setIcon(R.drawable.wrong);
showRightorNot.setTitle(R.string.showAnswerTitle_NO);
showRightorNot.setPositiveButton(R.string.about_dialog_ok, nullnullnullnull);
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⑥ 结果
showRightorNot.setMessage(R.string.wrong).show();
Toast.makeText(thisthisthisthis,getString(R.string.answerIS)+
boy_girl[index], Toast.LENGTH_LONG).show();
} }
@Override public public public
public booleanbooleanbooleanboolean onCreateOptionsMenu(Menu menu) { // TODOTODOTODOTODO Auto-generated method stub
/*添加退出菜单*/
exit=menu.add("Exit");
/*设置退出菜单图片*/
exit.setIcon(R.drawable.ic_menu_close_clear_cancel);
return return return
return supersupersupersuper.onCreateOptionsMenu(menu);
}
@Override public public public
public booleanbooleanbooleanboolean onOptionsItemSelected(MenuItem item) { // TODOTODOTODOTODO Auto-generated method stub
/*结束Activity*/
finish();
return return return
return supersupersupersuper.onOptionsItemSelected(item);
} }