<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.dragon.android.fight" android:versionCode="1" android:versionName="1.0" > <uses-sdk  android:minSdkVersion="15"  android:targetSdkVersion="19" /> <application  android:allowBackup="true"  android:icon="@drawable/ic_launcher"  android:label="@string/app_name"  android:theme="@style/AppTheme" >  <activity   android:name="com.dragon.android.fight.MainActivity"   android:label="@string/app_name" >   <intent-filter>    <action android:name="android.intent.action.MAIN" />    <category android:name="android.intent.category.LAUNCHER" />   </intent-filter>  </activity>  <activity    android:name="com.dragon.android.fight.OtherActivity">  </activity> </application></manifest>AndroidManifest

<?xml version="1.0" encoding="utf-8"?><resources> <string name="app_name">fight</string> <string name="hello_world">Hello world!</string> <string name="action_settings">Settings</string> <string name="player1">甲方</string> <string name="player2">乙方</string> <string name="choose1">石頭</string> <string name="choose2">剪刀</string> <string name="choose3">布</string> <string name="sure">出拳</string> <string name="again">再來一局</string></resources>--> fragment_main.xml<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ffffff" tools:context="com.dragon.android.fight.MainActivity$PlaceholderFragment" > <TextView  android:id="@+id/textView1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_alignParentTop="true"  android:layout_centerHorizontal="true"  android:layout_marginTop="36dp"  android:text="@string/player1"  android:textSize="30sp" /> <RadioGroup  android:id="@+id/radioGroup1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_centerHorizontal="true"  android:layout_centerVertical="true" >  <RadioButton   android:id="@+id/radio0"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:checked="true"   android:text="@string/choose1" />  <RadioButton   android:id="@+id/radio1"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="@string/choose2" />  <RadioButton   android:id="@+id/radio2"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="@string/choose3" /> </RadioGroup> <Button  android:id="@+id/button1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_alignLeft="@+id/radioGroup1"  android:layout_below="@+id/radioGroup1"  android:layout_marginTop="14dp"  android:text="@string/sure" /> <ImageView  android:id="@+id/imageView1"  android:layout_width="120dp"  android:layout_height="120dp"  android:layout_above="@+id/radioGroup1"  android:layout_below="@+id/textView1"  android:layout_centerHorizontal="true"  android:src="@drawable/b" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"  android:background="#ffffff" > <TextView  android:id="@+id/textView1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_alignParentTop="true"  android:layout_centerHorizontal="true"  android:layout_marginTop="36dp"  android:text="@string/player2"  android:textSize="30sp" /> <RadioGroup  android:id="@+id/radioGroup1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_centerHorizontal="true"  android:layout_centerVertical="true" >  <RadioButton   android:id="@+id/radio0"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:checked="true"   android:text="@string/choose1" />  <RadioButton   android:id="@+id/radio1"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="@string/choose2" />  <RadioButton   android:id="@+id/radio2"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="@string/choose3" /> </RadioGroup> <Button  android:id="@+id/button1"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_alignLeft="@+id/radioGroup1"  android:layout_below="@+id/radioGroup1"  android:layout_marginTop="14dp"  android:text="@string/sure" /> <TextView  android:id="@+id/textView2"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_alignLeft="@+id/textView1"  android:layout_below="@+id/button1"  android:visibility="invisible"  android:layout_marginTop="14dp"/> <Button  android:id="@+id/button2"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_below="@+id/textView2"  android:layout_centerHorizontal="true"  android:visibility="invisible"  android:text="@string/again" /> <ImageView  android:id="@+id/imageView1"  android:layout_width="120dp"  android:layout_height="120dp"  android:layout_above="@+id/radioGroup1"  android:layout_below="@+id/textView1"  android:layout_centerHorizontal="true"  android:src="@drawable/a" /> </RelativeLayout>

package com.dragon.android.fight;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.RadioButton;import android.widget.RadioGroup;public class MainActivity extends Activity { // 設置一個靜態變量，用于關閉Activity public static MainActivity instance = null; private RadioGroup radioGroup1; private Button button1; private ImageView imageView1; @Override protected void onCreate(Bundle savedInstanceState) { // 代表當前的Activity instance = this; super.onCreate(savedInstanceState); setContentView(R.layout.fragment_main); radioGroup1 = (RadioGroup) findViewById(R.id.radioGroup1); // 設置圖片透明 // imageView1 = (ImageView) findViewById(R.id.imageView1); // imageView1.getBackground().setAlpha(100); button1 = (Button) findViewById(R.id.button1); button1.setOnClickListener(new MyButtonListener()); } class MyButtonListener implements OnClickListener { @Override public void onClick(View v) {  // 得到選中的RadioButton  RadioButton radioButton = (RadioButton) findViewById(radioGroup1   .getCheckedRadioButtonId());  String radioText = radioButton.getText().toString();  Intent intent = new Intent();  intent.putExtra("checked", radioText);  intent.setClass(MainActivity.this, OtherActivity.class);  startActivity(intent); } }}

package com.dragon.android.fight;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TextView;public class OtherActivity extends Activity { private RadioGroup radioGroup1; private Button button1; private TextView textView2; private RadioButton radioButton; private Button button2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_other); radioGroup1 = (RadioGroup) findViewById(R.id.radioGroup1); button1 = (Button) findViewById(R.id.button1); textView2 = (TextView) findViewById(R.id.textView2); button2 = (Button) findViewById(R.id.button2); button1.setOnClickListener(new MyButtonListener()); button2.setOnClickListener(new MyButtonListener1()); } class MyButtonListener implements OnClickListener { @Override public void onClick(View v) {  radioButton = (RadioButton) findViewById(radioGroup1   .getCheckedRadioButtonId());  String buttonText = radioButton.getText().toString();  Intent intent = getIntent();  String checked = intent.getStringExtra("checked");  // 設置View為可見  textView2.setVisibility(View.VISIBLE);  button2.setVisibility(View.VISIBLE);  String msg = "甲出：" + checked + "/n" + "乙出：" + buttonText   + "/n";  if (buttonText.equals(checked)) {  textView2.setText(msg + "平局");  }  if (buttonText.equals("石頭")) {  if (checked.equals("剪刀")) {   textView2.setText(msg + "乙方贏");  } else if (checked.equals("布")) {   textView2.setText(msg + "甲方贏");  }  }  if (buttonText.equals("剪刀")) {  if (checked.equals("布")) {   textView2.setText(msg + "乙方贏");  } else if (checked.equals("石頭")) {   textView2.setText(msg + "甲方贏");  }  }  if (buttonText.equals("布")) {  if (checked.equals("石頭")) {   textView2.setText(msg + "乙方贏");  } else if (checked.equals("剪刀")) {   textView2.setText(msg + "甲方贏");  }  } } } class MyButtonListener1 implements OnClickListener { @Override public void onClick(View arg0) {  Intent intent = new Intent();  intent.setClass(OtherActivity.this, MainActivity.class);  finish();  // 關閉指定Activity  MainActivity.instance.finish();  startActivity(intent); } }}