freedragon

    /**
     * <p>将文件转成base64 字符串</p>
     * @param path 文件路径
     * @return
     * @throws Exception
     */
    public static String encodeBase64File(String path) throws Exception {
        File  file = new File(path);
        FileInputStream inputFile = new FileInputStream(file);
        byte[] buffer = new byte[(int)file.length()];
        inputFile.read(buffer);
        inputFile.close();
//        return new android.util.Base64;
        MyUtils.myLog("------------", file+"===="+ "");
        return android.util.Base64.encodeToString(buffer, Base64.DEFAULT);
    }
    /**
     * <p>将base64字符解码保存文件</p>
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void decoderBase64File(String base64Code,String targetPath) throws Exception {
        byte [] baseByte = android.util.Base64.decode(base64Code, Base64.DEFAULT);
        
//        byte[] buffer = new BASE64Decoder().decodeBuffer(base64Code);
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(baseByte);
        out.close();
    }
    /**
     * <p>将base64字符保存文本文件</p>
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void toFile(String base64Code,String targetPath) throws Exception {
        byte[] buffer = base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }
    public static void main(String[] args) {
        try {
            String base64Code =encodeBase64File("D:\\1.jpg");
            System.out.println(base64Code);
            decoderBase64File(base64Code, "D:\\2.jpg");
            toFile(base64Code, "D:\\three.txt");            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

12-26 06:29:17.351: E/AndroidRuntime(911): FATAL EXCEPTION: main
12-26 06:29:17.351: E/AndroidRuntime(911): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.hjx.sns.android.activity/com.hjx.sns.android.activity.InterestClassGroupGridView}; have you declared this activity in your AndroidManifest.xml?
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.ActivityThread.resolveActivityInfo(ActivityThread.java:1457)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:277)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.hjx.sns.android.activity.InterestGroup.startMyAcitvity(InterestGroup.java:79)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.hjx.sns.android.activity.InterestGroup$1.onClick(InterestGroup.java:47)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.view.View.performClick(View.java:2485)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.view.View$PerformClick.run(View.java:9080)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Handler.handleCallback(Handler.java:587)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Handler.dispatchMessage(Handler.java:92)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.os.Looper.loop(Looper.java:123)
12-26 06:29:17.351: E/AndroidRuntime(911):     at android.app.ActivityThread.main(ActivityThread.java:3683)
12-26 06:29:17.351: E/AndroidRuntime(911):     at java.lang.reflect.Method.invokeNative(Native Method)
12-26 06:29:17.351: E/AndroidRuntime(911):     at java.lang.reflect.Method.invoke(Method.java:507)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-26 06:29:17.351: E/AndroidRuntime(911):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-26 06:29:17.351: E/AndroidRuntime(911):     at dalvik.system.NativeStart.main(Native Method)

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <color name="White">#FFFFFF</color>
 <color name="Ivory">#FFFFF0</color>
 <color name="LightYellow">#FFFFE0</color>
 <color name="Yellow">#FFFF00</color>
 <color name="Snow">#FFFAFA</color>
 <color name="FloralWhite">#FFFAF0</color>
 <color name="LemonChiffon">#FFFACD</color>
 <color name="Cornsilk">#FFF8DC</color>
 <color name="Seashell">#FFF5EE</color>
 <color name="LavenderBlush">#FFF0F5</color>
 <color name="PapayaWhip">#FFEFD5</color>
 <color name="BlanchedAlmond">#FFEBCD</color>
 <color name="MistyRose">#FFE4E1</color>
 <color name="Bisque">#FFE4C4</color>
 <color name="Moccasin">#FFE4B5</color>
 <color name="NavajoWhite">#FFDEAD</color>
 <color name="PeachPuff">#FFDAB9</color>
 <color name="Gold">#FFD700</color>
 <color name="Pink">#FFC0CB</color>
 <color name="LightPink">#FFB6C1</color>
 <color name="Orange">#FFA500</color>
 <color name="LightSalmon">#FFA07A</color>
 <color name="DarkOrange">#FF8C00</color>
 <color name="Coral">#FF7F50</color>
 <color name="HotPink">#FF69B4</color>
 <color name="Tomato">#FF6347</color>
 <color name="OrangeRed">#FF4500</color>
 <color name="DeepPink">#FF1493</color>
 <color name="Fuchsia">#FF00FF</color>
 <color name="Magenta">#FF00FF</color>
 <color name="Red">#FF0000</color>
 <color name="OldLace">#FDF5E6</color>
 <color name="LightGoldenrodYellow">#FAFAD2</color>
 <color name="Linen">#FAF0E6</color>
 <color name="AntiqueWhite">#FAEBD7</color>
 <color name="Salmon">#FA8072</color>
 <color name="GhostWhite">#F8F8FF</color>
 <color name="MintCream">#F5FFFA</color>
 <color name="WhiteSmoke">#F5F5F5</color>
 <color name="Beige">#F5F5DC</color>
 <color name="Wheat">#F5DEB3</color>
 <color name="SandyBrown">#F4A460</color>
 <color name="Azure">#F0FFFF</color>
 <color name="Honeydew">#F0FFF0</color>
 <color name="AliceBlue">#F0F8FF</color>
 <color name="Khaki">#F0E68C</color>
 <color name="LightCoral">#F08080</color>
 <color name="PaleGoldenrod">#EEE8AA</color>
 <color name="Violet">#EE82EE</color>
 <color name="DarkSalmon">#E9967A</color>
 <color name="Lavender">#E6E6FA</color>
 <color name="LightCyan">#E0FFFF</color>
 <color name="BurlyWood">#DEB887</color>
 <color name="Plum">#DDA0DD</color>
 <color name="Gainsboro">#DCDCDC</color>
 <color name="Crimson">#DC143C</color>
 <color name="PaleVioletRed">#DB7093</color>
 <color name="Goldenrod">#DAA520</color>
 <color name="Orchid">#DA70D6</color>
 <color name="Thistle">#D8BFD8</color>
 <color name="LightGrey">#D3D3D3</color>
 <color name="Tan">#D2B48C</color>
 <color name="Chocolate">#D2691E</color>
 <color name="Peru">#CD853F</color>
 <color name="IndianRed">#CD5C5C</color>
 <color name="MediumVioletRed">#C71585</color>
 <color name="Silver">#C0C0C0</color>
 <color name="DarkKhaki">#BDB76B</color>
 <color name="RosyBrown">#BC8F8F</color>
 <color name="MediumOrchid">#BA55D3</color>
 <color name="DarkGoldenrod">#B8860B</color>
 <color name="FireBrick">#B22222</color>
 <color name="PowderBlue">#B0E0E6</color>
 <color name="LightSteelBlue">#B0C4DE</color>
 <color name="PaleTurquoise">#AFEEEE</color>
 <color name="GreenYellow">#ADFF2F</color>
 <color name="LightBlue">#ADD8E6</color>
 <color name="DarkGray">#A9A9A9</color>
 <color name="Brown">#A52A2A</color>
 <color name="Sienna">#A0522D</color>
 <color name="YellowGreen">#9ACD32</color>
 <color name="DarkOrchid">#9932CC</color>
 <color name="PaleGreen">#98FB98</color>
 <color name="DarkViolet">#9400D3</color>
 <color name="MediumPurple">#9370DB</color>
 <color name="LightGreen">#90EE90</color>
 <color name="DarkSeaGreen">#8FBC8F</color>
 <color name="SaddleBrown">#8B4513</color>
 <color name="DarkMagenta">#8B008B</color>
 <color name="DarkRed">#8B0000</color>
 <color name="BlueViolet">#8A2BE2</color>
 <color name="LightSkyBlue">#87CEFA</color>
 <color name="SkyBlue">#87CEEB</color>
 <color name="Gray">#808080</color>
 <color name="Olive">#808000</color>
 <color name="Purple">#800080</color>
 <color name="Maroon">#800000</color>
 <color name="Aquamarine">#7FFFD4</color>
 <color name="Chartreuse">#7FFF00</color>
 <color name="LawnGreen">#7CFC00</color>
 <color name="MediumSlateBlue">#7B68EE</color>
 <color name="LightSlateGray">#778899</color>
 <color name="SlateGray">#708090</color>
 <color name="OliveDrab">#6B8E23</color>
 <color name="SlateBlue">#6A5ACD</color>
 <color name="DimGray">#696969</color>
 <color name="MediumAquamarine">#66CDAA</color>
 <color name="CornflowerBlue">#6495ED</color>
 <color name="CadetBlue">#5F9EA0</color>
 <color name="DarkOliveGreen">#556B2F</color>
 <color name="Indigo">#4B0082</color>
 <color name="MediumTurquoise">#48D1CC</color>
 <color name="DarkSlateBlue">#483D8B</color>
 <color name="SteelBlue">#4682B4</color>
 <color name="RoyalBlue">#4169E1</color>
 <color name="Turquoise">#40E0D0</color>
 <color name="MediumSeaGreen">#3CB371</color>
 <color name="LimeGreen">#32CD32</color>
 <color name="DarkSlateGray">#2F4F4F</color>
 <color name="SeaGreen">#2E8B57</color>
 <color name="ForestGreen">#228B22</color>
 <color name="LightSeaGreen">#20B2AA</color>
 <color name="DodgerBlue">#1E90FF</color>
 <color name="MidnightBlue">#191970</color>
 <color name="Aqua">#00FFFF</color>
 <color name="Cyan">#00FFFF</color>
 <color name="SpringGreen">#00FF7F</color>
 <color name="Lime">#00FF00</color>
 <color name="MediumSpringGreen">#00FA9A</color>
 <color name="DarkTurquoise">#00CED1</color>
 <color name="DeepSkyBlue">#00BFFF</color>
 <color name="DarkCyan">#008B8B</color>
 <color name="Teal">#008080</color>
 <color name="Green">#008000</color>
 <color name="DarkGreen">#006400</color>
 <color name="Blue">#0000FF</color>
 <color name="MediumBlue">#0000CD</color>
 <color name="DarkBlue">#00008B</color>
 <color name="Navy">#000080</color>
 <color name="Black">#000000</color>
</resources>

package com.demo.scrollview;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

public class main extends Activity {
    /** Called when the activity is first created. */
    private LinearLayout mLayout;
    private HorizontalScrollView sView;
    private final Handler mHandler = new Handler();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.horizontalscroll);
        // 创建一个线性布局
        mLayout = (LinearLayout) this.findViewById(R.id.LinearLayout);
        // 创建一个ScrollView对象
        sView = (HorizontalScrollView) this.findViewById(R.id.ScrollView);
        Button mBtn = (Button) this.findViewById(R.id.Button);
        mBtn.setOnClickListener(mClickListener);// 添加点击事件监听
    }

    // Button事件监听,当点击第一个按钮时增加一个button和一个textview
    private Button.OnClickListener mClickListener = new Button.OnClickListener() {

        @Override
        public void onClick(View v) {
            TextView tView = new TextView(main.this);// 定义一个TextView
            tView.setText("ScrollView也是一个Layout布局，可以让它内部的数据显示不下的时候出现垂直滚动条，要注意的是不能在ScrollView中放多个组件");// 设置TextView的文本信息

            // 设置线性布局的属性
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.FILL_PARENT
                    
);
            mLayout.addView(tView, params);// 添加一个TextView控件
            mHandler.post(mScrollToButton);//传递一个消息进行滚动
        }

    };
    private Runnable mScrollToButton = new Runnable() {

        @Override
        public void run() {
            int off = mLayout.getMeasuredWidth() - sView.getWidth();
            if (off > 0) {
                sView.scrollTo( off,0);// 改变滚动条的位置
            }
        }

    };

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main" android:orientation="vertical"
    android:layout_width="fill_parent" android:layout_height="wrap_content">

    <Button android:id="@+id/Button" android:text="Button0"
        android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

    <HorizontalScrollView android:id="@+id/ScrollView"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" android:scrollbars="horizontal" >
        <LinearLayout android:id="@+id/LinearLayout"
            android:orientation="horizontal" android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <TextView android:id="@+id/TestView" android:layout_width="wrap_content"
                android:layout_height="fill_parent" android:text="ScrollView也是一个Layout布局，可以让它内部的数据显示不下的时候出现垂直滚动条，要注意的是不能在ScrollView中放多个组件" />
        </LinearLayout>
    </HorizontalScrollView>
</LinearLayout>   

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ScrollView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scrollbars="vertical" >

    <LinearLayout
        android:id="@+id/LinearLayout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/TestView"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="TestView0" />

        <Button
            android:id="@+id/Button"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Button0" >
        </Button>
    </LinearLayout>

</ScrollView>