Android System startup process

Sequence Input Stream Source Code for Andriod.

手机安全防火墙源码是一套比较全面的安卓手机安全方面的源码，总结起来就是三大防火墙电话防火墙、短信防火墙和网络防火墙和一些零碎的小工具。网络防火墙有流量预警功能，可以设置2G3G和wifi的数据流量和显示流量统计。小工具有android的命令行工具，测试了一下可以使用一些简单的liunx命令。还有一个超级终端功能。任务管理器可以结束进程和查看进程的通话防火墙支持通话黑白名单，可以选择电话被拒接以后的回复语、短信防火墙跟电话防火墙功能差不多。(Mobile security firewall source code is a more comprehensive Android mobile phone safety aspects of the source code, to sum up is three firewall phone firewall, SMS firewall and network firewall and some fragmentary gadget. Network firewall has traffic warning function, you can set the 2G3G and WiFi data flow and display traffic statistics. As a command line tool with Android, you can use some simple liunx command test. There is also a super terminal function. Task manager to end of the process and check process call firewall support call black and white list, can choose the telephone was refused to reply, SMS firewall with phone firewall functions in a similar way.)

android 百度地图语音导航源码 项目中用到的，传上来换点积分(android baidu map )

Android从入门到精通. 网络编程部分原代码以及文档。(android programming for networking)

简单的瑞萨R8C一线通讯从机模仿程序，模拟BQ26100从机发送和接收数据，还不完整，仅作参考(Simple renesas R8C a line of communication the machine,Simulation BQ26100 to send and receive data the machine, is not complete, for reference only。)

以前做的android的FTP demo，功能没有完全实现，上传和下载的限速是虚拟的(The FTP demo of Android has not been fully implemented. The speed limit of upload and download is virtual)

android webservice 获取天气预报情况android webservice 获取天气预报情况(android webserviceandroid webserviceandroid webserviceandroid webserviceandroid webservice)

[实例简介] 仿微信浏览相册图片， 相册浏览 [实例截图] [核心代码]import java.io.File;import java.io.FilenameFilter;import java.util.ArrayList;import java.util.Arrays;import java.util.HashSet;import java.util.List;import android.app.Activity;import android.app.ProgressDialog;import android.content.ContentResolver;import android.database.Cursor;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.provider.MediaStore;import android.util.DisplayMetrics;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.view.WindowManager;import android.widget.GridView;import android.widget.PopupWindow.OnDismissListener;import android.widget.RelativeLayout;import android.widget.TextView;import android.widget.Toast;import com.zhy.bean.ImageFloder;import com.zhy.imageloader.ListImageDirPopupWindow.OnImageDirSelected;public class MainActivity extends Activity implements OnImageDirSelected{ private ProgressDialog mProgressDialog; /** * 存储文件夹中的图片数量 */ private int mPicsSize; /** * 图片数量最多的文件夹 */ private File mImgDir; /** * 所有的图片 */ private List mImgs; private GridView mGirdView; private MyAdapter mAdapter; /** * 临时的辅助类，用于防止同一个文件夹的多次扫描 */ private HashSet mDirPaths = new HashSet(); /** * 扫描拿到所有的图片文件夹 */ private List mImageFloders = new ArrayList(); private RelativeLayout mBottomLy; private TextView mChooseDir; private TextView mImageCount; int totalCount = 0; private int mScreenHeight; private ListImageDirPopupWindow mListImageDirPopupWindow; private Handler mHandler = new Handler() { public void handleMessage(android.os.Message msg) { mProgressDialog.dismiss(); // 为View绑定数据 data2View(); // 初始化展示文件夹的popupWindw initListDirPopupWindw(); } }; /** * 为View绑定数据 */ private void data2View() { if (mImgDir == null) { Toast.makeText(getApplicationContext(), "擦，一张图片没扫描到", Toast.LENGTH_SHORT).show(); return; } mImgs = Arrays.asList(mImgDir.list()); /** * 可以看到文件夹的路径和图片的路径分开保存，极大的减少了内存的消耗； */ mAdapter = new MyAdapter(getApplicationContext(), mImgs, R.layout.grid_item, mImgDir.getAbsolutePath()); mGirdView.setAdapter(mAdapter); mImageCount.setText(totalCount "张"); }; /** * 初始化展示文件夹的popupWindw */ private void initListDirPopupWindw() { mListImageDirPopupWindow = new ListImageDirPopupWindow( LayoutParams.MATCH_PARENT, (int) (mScreenHeight * 0.7), mImageFloders, LayoutInflater.from(getApplicationContext()) .inflate(R.layout.list_dir, null)); mListImageDirPopupWindow.setOnDismissListener(new OnDismissListener() { @Override public void onDismiss() { // 设置背景颜色变暗 WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = 1.0f; getWindow().setAttributes(lp); } }); // 设置选择文件夹的回调 mListImageDirPopupWindow.setOnImageDirSelected(this); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); DisplayMetrics outMetrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(outMetrics); mScreenHeight = outMetrics.heightPixels; initView(); getImages(); initEvent(); } /** * 利用ContentProvider扫描手机中的图片，此方法在运行在子线程中 完成图片的扫描，最终获得jpg最多的那个文件夹 */ private void getImages() { if (!Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) { Toast.makeText(this, "暂无外部存储", Toast.LENGTH_SHORT).show(); return; } // 显示进度条 mProgressDialog = ProgressDialog.show(this, null, "正在加载..."); new Thread(new Runnable() { @Override public void run() { String firstImage = null; Uri mImageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; ContentResolver mContentResolver = MainActivity.this .getContentResolver(); // 只查询jpeg和png的图片 Cursor mCursor = mContentResolver.query(mImageUri, null, MediaStore.Images.Media.MIME_TYPE "=? or " MediaStore.Images.Media.MIME_TYPE "=?", new String[] { "image/jpeg", "image/png" }, MediaStore.Images.Media.DATE_MODIFIED); Log.e("TAG", mCursor.getCount() ""); while (mCursor.moveToNext()) { // 获取图片的路径 String path = mCursor.getString(mCursor .getColumnIndex(MediaStore.Images.Media.DATA)); Log.e("TAG", path); // 拿到第一张图片的路径 if (firstImage == null) firstImage = path; // 获取该图片的父路径名 File parentFile = new File(path).getParentFile(); if (parentFile == null) continue; String dirPath = parentFile.getAbsolutePath(); ImageFloder imageFloder = null; // 利用一个HashSet防止多次扫描同一个文件夹（不加这个判断，图片多起来还是相当恐怖的~~） if (mDirPaths.contains(dirPath)) { continue; } else { mDirPaths.add(dirPath); // 初始化imageFloder imageFloder = new ImageFloder(); imageFloder.setDir(dirPath); imageFloder.setFirstImagePath(path); } int picSize = parentFile.list(new FilenameFilter() { @Override public boolean accept(File dir, String filename) { if (filename.endsWith(".jpg") || filename.endsWith(".png") || filename.endsWith(".jpeg")) return true; return false; } }).length; totalCount = picSize; imageFloder.setCount(picSize); mImageFloders.add(imageFloder); if (picSize > mPicsSize) { mPicsSize = picSize; mImgDir = parentFile; } } mCursor.close(); // 扫描完成，辅助的HashSet也就可以释放内存了 mDirPaths = null; // 通知Handler扫描图片完成 mHandler.sendEmptyMessage(0x110); } }).start(); } /** * 初始化View */ private void initView() { mGirdView = (GridView) findViewById(R.id.id_gridView); mChooseDir = (TextView) findViewById(R.id.id_choose_dir); mImageCount = (TextView) findViewById(R.id.id_total_count); mBottomLy = (RelativeLayout) findViewById(R.id.id_bottom_ly); } private void initEvent() { /** * 为底部的布局设置点击事件，弹出popupWindow */ mBottomLy.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { mListImageDirPopupWindow .setAnimationStyle(R.style.anim_popup_dir); mListImageDirPopupWindow.showAsDropDown(mBottomLy, 0, 0); // 设置背景颜色变暗 WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = .3f; getWindow().setAttributes(lp); } }); } @Override public void selected(ImageFloder floder) { mImgDir = new File(floder.getDir()); mImgs = Arrays.asList(mImgDir.list(new FilenameFilter() { @Override public boolean accept(File dir, String filename) { if (filename.endsWith(".jpg") || filename.endsWith(".png") || filename.endsWith(".jpeg")) return true; return false; } })); /** * 可以看到文件夹的路径和图片的路径分开保存，极大的减少了内存的消耗； */ mAdapter = new MyAdapter(getApplicationContext(), mImgs, R.layout.grid_item, mImgDir.getAbsolutePath()); mGirdView.setAdapter(mAdapter); // mAdapter.notifyDataSetChanged(); mImageCount.setText(floder.getCount() "张"); mChooseDir.setText(floder.getName()); mListImageDirPopupWindow.dismiss(); }}

有关于安卓的景物实例,主要介绍旅游景点的浏览页面。(There are examples on the scene Andrews)

一个demo，实现调用系统相机拍照，将其显示在屏幕上，并且存到sd卡。     Android中实现拍照有两种方法，一种是调用系统自带的相机，然后使用其返回的照片数据。 还有一种是自己用Camera类和其他相关类实现相机功能，这种方法定制度比较高，洗染也比较复杂，一般平常的应用只需使用第一种即可。 用Intent启动相机的代码：Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);startActivityForResult(intent, 1); 拍完照后就可以在onActivityResult(int requestCode, int resultCode, Intent data)中获取到Bitmap对象了。Bitmap bitmap = (Bitmap) data.getExtras().get("data"); 要将图像存储到sd卡之前最好先检查一下sd卡是否可用     String sdStatus = Environment.getExternalStorageState();            if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用                Log.v("TestFile",                        "SD card is not avaiable/writeable right now.");                return;            }   以下代码可以实现将图像文件存到“sdcard/myImage/”文件夹下，名称为“111.jpg”            File file = new File("/sdcard/myImage/");            file.mkdirs();// 创建文件夹            String fileName = "/sdcard/myImage/111.jpg";             try {                b = new FileOutputStream(fileName);                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件            } catch (FileNotFoundException e) {                e.printStackTrace();            } finally {                try {                    b.flush();                    b.close();                } catch (IOException e) {                    e.printStackTrace();                }            } 另外要注意的是读写sd卡文件必须首先要在Mainifest.xml文件中配置权限：           一个demo，实现调用系统相机拍照，将其显示在屏幕上，并且存到sd卡。