标签:1.3 install element roc 网上 hid mac data chmod
在年初的时候,尝试了一把热修复技术,当时选择的是阿里的andfix,使用起来也很简单,这里就不在多少,如果你对andfix有兴趣请链接:点击打开链接。虽然网上将热修复的文章很多,不过我还是想说原理,然后配合代码,我想这样大家理解更加深刻。
| 拷贝资源 | 拷贝旧版本APK以及新版本APK到SD卡。为了后面进行生成差分包 |
| 安装旧版本APK | 安装旧版本的APK |
| 生成补丁 | 生成差分包。这个实际上应该是在服务端完成 |
| 打补丁 | 通过差分包及旧版本APK生成新版本APK |
| 安装新版本APK | 安装生成的新版本APK |
| 获取某个应用的APK安装文件 | 在真正的增量更新过程中,旧版本Apk应该从/data/app底下获取,拷贝到SD卡,进行打补丁。当然,也可以不拷贝,直接使用该路径。 |
String srcDir = Environment.getExternalStorageDirectory().toString() + "/DaemonProcess-1.apk"; String destDir1 = Environment.getExternalStorageDirectory().toString() + "/DaemonProcess-2.apk"; String destDir2 = Environment.getExternalStorageDirectory().toString() + "/DaemonProcess-3.apk"; String patchDir = Environment.getExternalStorageDirectory().toString() + "/DaemonProcess.patch";
String appDir = getPackageManager().getApplicationInfo(packageName, 0).sourceDir;destDir1:新版本的apk路径。
public class DiffUtils {
static DiffUtils instance;
public static DiffUtils getInstance() {
if (instance == null)
instance = new DiffUtils();
return instance;
}
static {
System.loadLibrary("ApkPatchLibrary");
}
/**
* native方法 比较路径为oldPath的apk与newPath的apk之间差异,并生成patch包,存储于patchPath
*/
public native int genDiff(String oldApkPath, String newApkPath, String patchPath);
}合成新包Native方法:public class PatchUtils {
static PatchUtils instance;
public static PatchUtils getInstance() {
if (instance == null)
instance = new PatchUtils();
return instance;
}
static {
System.loadLibrary("ApkPatchLibrary");
}
/**
* native方法 使用路径为oldApkPath的apk与路径为patchPath的补丁包,合成新的apk,并存储于newApkPath
*/
public native int patch(String oldApkPath, String newApkPath, String patchPath);
}private class CopyTask extends AsyncTask<String, Void, Integer> {
@Override
protected Integer doInBackground(String... params) {
for (int i = 0; i < params.length; i += 2) {
try {
File file = new File(params[i]);
if (!file.exists())
FileUtils.createFile(file);
InputStream is;
OutputStream os = new FileOutputStream(params[i]);
is = getAssets().open(params[i + 1]);
byte[] buffer = new byte[1024];
int length = is.read(buffer);
while (length > 0) {
os.write(buffer, 0, length);
length = is.read(buffer);
}
os.flush();
is.close();
os.close();
} catch (Exception e) {
handler.obtainMessage(1).sendToTarget();
return null;
}
}
handler.obtainMessage(0).sendToTarget();
return null;
}
@Override
protected void onPostExecute(Integer integer) {
super.onPostExecute(integer);
loadding.setVisibility(View.GONE);
}
}2,合成新的apk(jni会自动判断是否合成成功)private class PatchTask extends AsyncTask<String, Void, Integer> {
@Override
protected Integer doInBackground(String... params) {
try {
int result = PatchUtils.getInstance().patch(srcDir, destDir2, patchDir);
if (result == 0) {
handler.obtainMessage(4).sendToTarget();
return WHAT_SUCCESS;
} else {
handler.obtainMessage(5).sendToTarget();
return WHAT_FAIL_PATCH;
}
} catch (Exception e) {
e.printStackTrace();
}
return WHAT_FAIL_PATCH;
}
@Override
protected void onPostExecute(Integer integer) {
super.onPostExecute(integer);
loadding.setVisibility(View.GONE);
}
}3,安装新的apk private void install(String dir) {
String command = "chmod 777 " + dir;
Runtime runtime = Runtime.getRuntime();
try {
runtime.exec(command); // 可执行权限
} catch (IOException e) {
e.printStackTrace();
}
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.parse("file://" + dir), "application/vnd.android.package-archive");
startActivity(intent);
}服务端工具以及源码位于Server目录下。目前只在Linux64位的系统下编译,其他系统大家可自行编译。Linux下的可直接修改makefile,windows下可用VC编译。
<!--命令 oldApk newApk patch-->
./linux-x86_64/Diff DaemonProcess-1.apk DaemonProcess-2.apk dp.patch<!--命令 oldApk newApk patch-->
./linux-x86_64/Patch DaemonProcess-1.apk DaemonProcess-3.apk dp.patch标签:1.3 install element roc 网上 hid mac data chmod
原文地址:http://blog.csdn.net/xiangzhihong8/article/details/53231854