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第2章 游戏开发基础知识/Sample2_6/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

第2章 游戏开发基础知识/Sample2_6/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Sample2_6</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

第2章 游戏开发基础知识/Sample2_6/.settings/org.eclipse.jdt.core.prefs

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+#Fri Jul 01 08:09:10 CST 2011
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.6

第2章 游戏开发基础知识/Sample2_6/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      android:versionCode="1"
+      android:versionName="1.0" package="com.bn.pp6">
+    <application android:icon="@drawable/icon" android:label="@string/app_name">
+        <activity android:name=".Sample2_6_Activity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest> 

第2章 游戏开发基础知识/Sample2_6/default.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+# 
+# This file must be checked in Version Control Systems.
+# 
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Project target.
+target=android-7

第2章 游戏开发基础知识/Sample2_6/gen/com/bn/pp6/R.java

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+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * aapt tool from the resource data it found.  It
+ * should not be modified by hand.
+ */
+
+package com.bn.pp6;
+
+public final class R {
+    public static final class attr {
+    }
+    public static final class drawable {
+        public static final int icon=0x7f020000;
+    }
+    public static final class id {
+        public static final int back=0x7f050000;
+        public static final int currDirTV=0x7f050001;
+        public static final int lv=0x7f050002;
+    }
+    public static final class layout {
+        public static final int main=0x7f030000;
+    }
+    public static final class string {
+        public static final int app_name=0x7f040001;
+        public static final int hello=0x7f040000;
+    }
+}

第2章 游戏开发基础知识/Sample2_6/res/layout/main.xml

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+<?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:background="#ffffff"
+    android:layout_height="fill_parent"
+    >   
+   	<Button
+   		android:id="@+id/back"
+   		android:layout_width="fill_parent"
+   		android:layout_height="wrap_content"
+   		android:text="返回上一层目录"
+   		android:textSize="18dip"    		
+   		/> 
+    <LinearLayout
+   		android:layout_width="fill_parent"
+    	android:layout_height="fill_parent"
+    	android:orientation="vertical"
+    	>
+    	<LinearLayout
+	    	android:layout_width="fill_parent"
+	    	android:layout_height="wrap_content"
+	    	>
+	    	<TextView
+	    		android:id="@+id/currDirTV"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"
+				android:textColor="#000000"
+				/>
+		</LinearLayout>		
+		<LinearLayout
+			android:layout_width="fill_parent"
+			android:layout_height="wrap_content"
+			android:paddingTop="10dip"
+			>
+			<ListView				
+				android:id="@+id/lv"
+				android:layout_width="fill_parent"
+				android:layout_height="fill_parent"
+				android:textSize="18dip"
+				/>
+		</LinearLayout>
+    </LinearLayout>
+</LinearLayout>

第2章 游戏开发基础知识/Sample2_6/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="hello">Hello World, Sample3_2_Activity!</string>
+    <string name="app_name">Sample2_6</string>
+</resources>

第2章 游戏开发基础知识/Sample2_6/src/com/bn/pp6/Sample2_6_Activity.java

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+package com.bn.pp6;
+
+import java.io.File; //导入相关包
+import android.app.Activity;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.View.OnClickListener;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.widget.AdapterView.OnItemClickListener;
+
+public class Sample2_6_Activity extends Activity {// 创建Activity
+	String currPath; // 当前路径字符串
+	String rootPath = "/"; // 根目录路径
+	TextView currDirTV;//显示当前路径的TextView
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.main); // 设置layout
+		final ListView lv = (ListView) this.findViewById(R.id.lv); // 获取ListView
+		Button back = (Button) this.findViewById(R.id.back); // 获取返回按钮
+		final File[] files = getFiles(rootPath); // 调用getFiles方法获取根目录下文件列表
+		currDirTV = (TextView) this.findViewById(R.id.currDirTV); // 获取ListView
+		currPath = rootPath;
+		currDirTV.setText("当前路径：" + currPath);//设置当前路径
+		initListView(files, lv); // 初始化显示列表
+		back.setOnClickListener // 返回按钮监听器
+		(new OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				if (!currPath.equals(rootPath)) {// 若当前路径不是根目录，返回到上一层目录
+					File f = new File(currPath); // 获取当前路径下的文件列表
+					f = f.getParentFile(); // 获取当前路径的上层路径
+					currPath = f.getPath(); // 更改当前路径
+					currDirTV.setText("当前路径：" + currPath);//设置当前路径
+					initListView(getFiles(currPath), lv); // 初始化显示列表
+				}
+			}
+		});
+	}
+	// 获取当前目录下的文件列表的方法
+	public File[] getFiles(String filePath) {
+		File[] files = new File(filePath).listFiles();// 获取当前目录下的文件列表
+		return files; // 返回文件列表
+	}
+	// 初始化ListView进行显示	
+	public void initListView(final File[] files, final ListView lv) {
+		// 当文件列表不为空时
+		if (files != null) {
+			if (files.length == 0) {// 当前目录为空
+				File f = new File(currPath); // 获取当前路径对应文件列表
+				f = f.getParentFile(); // 获取上层路径
+				currPath = f.getPath(); // 记录当前路径
+				currDirTV.setText("当前路径：" + currPath);//设置当前路径
+				Toast.makeText(this, "该文件夹为空！！", Toast.LENGTH_SHORT).show();
+			} else {
+				BaseAdapter ba = new BaseAdapter()// 创建适配器
+				{
+					@Override
+					public int getCount() {
+						return files.length;
+					}
+
+					@Override
+					public Object getItem(int position) {
+						return null;
+					}
+
+					@Override
+					public long getItemId(int position) {
+						return 0;
+					}
+
+					@Override
+					public View getView(int arg0, View arg1, ViewGroup arg2) {
+						LinearLayout ll = new LinearLayout(
+								Sample2_6_Activity.this); // 创建LinearLayout
+						ll.setOrientation(LinearLayout.VERTICAL); // 竖直排列
+						ll.setPadding(5, 5, 5, 5); // 设置留白
+						TextView tv = new TextView(Sample2_6_Activity.this); // 创建TextView
+						tv.setTextColor(Color.BLACK); // 设置字体颜色
+						tv.setText(files[arg0].getName()); // 添加文字为文件名称
+						tv.setGravity(Gravity.LEFT); // 左对齐
+						tv.setTextSize(16); // 字体大小
+						ll.addView(tv); // 添加TextView
+						return ll; // 返回LinearLayout
+					}
+				};
+				lv.setAdapter(ba); // 为ListView设置适配器
+				lv.setOnItemClickListener // 为ListView添加监听器
+				(new OnItemClickListener() {
+					@Override
+					public void onItemClick(AdapterView<?> arg0, View arg1,
+							int arg2, long arg3) {
+						currPath = files[arg2].getPath(); // 获取点击的文件名称的当前路径
+						currDirTV.setText("当前路径：" + currPath);//设置当前路径
+						File[] fs = getFiles(currPath); // 获取当前路径的文件列表
+						initListView(fs, lv); // 初始化ListView
+					}
+				});
+			}
+		} else {
+			File f = new File(currPath); // 获取当前文件列表的路径对应的文件
+			f = f.getParentFile(); // 获取父目录文件
+			currPath = f.getPath(); // 记录当前文件列表路径
+			currDirTV.setText("当前路径：" + currPath);//设置当前路径
+			Toast.makeText(this, "该目录不是文件夹或无权限访问！", Toast.LENGTH_SHORT).show();
+		}
+	}
+}