apk里安装apk

【转载】

假设在Aapk中放入Bapk，在Aapk安装运行后，要安装Bapk

将Bapk放在raw目录。

将Bapk拷贝至/data/data/Aapk的包名/files

设置Bapk的权限。

通过系统安装器安装。

代码随后上

String apkPath = "/data/data/" + getPackageName() + "/files";  
String apkName = "b.apk";  
File file = new File(apkPath,apkName);  
  
try  
{  
                InputStream is = getResources().openRawResource(R.raw.b);  
  
                if(!file.exists())  
                {  
                    file.createNewFile();  
  
                    FileOutputStream os = openFileOutput(file.getName(), Context.MODE_WORLD_WRITEABLE);  
  
                    byte[] bytes = new byte[512];  
                    int i = -1;  
                    while((i = is.read(bytes))>0)  
                    {  
                        os.write(bytes);  
                    }  
  
                    os.close();  
                    is.close();  
                    Log.d(LOG_TAG, apkName + " has been copy to " + apkPath);  
                };  
  
                String permission="666";  
  
                try  
                {  
                    String command = "chmod " + permission + " " + apkPath + "/" + apkName;  
                    Runtime runtime = Runtime.getRuntime();  
                    runtime.exec(command);  
                }  
                catch (IOException e)  
                {  
                    e.printStackTrace();  
                }  
  
            }  
            catch(Exception e)  
            {  
                Log.d(LOG_TAG, e.toString());  
                finish();  
            }  
  
            Intent intent = new Intent();  
            intent.setAction(android.content.Intent.ACTION_VIEW);  
            intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");  
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
            startActivity(intent);

如果apk文件过大，如下

-------------------------------------------------------

http://www.hfdigg.com/SrcShow.asp?Src_ID=10092

androidraw文件夹下.db后缀文件大于1M时，拷贝时将会出现：DEBUG/asset(725):DataexceedsUNCOMPRESS_DATA_MAX(1662976vs1048576)

出现这个问题的原因是，assetsManager无法处理大于1M的文件的压缩和解压。

但以下文件类型，因为是已经压缩过的，不会进行压缩处理，如下：

/*theseformatsarealreadycompressed,ordontcompresswell*/

staticconstchar*kNoCompressExt[]={

".jpg",".jpeg",".png",".gif",

".wav",".mp2",".mp3",".ogg",".aac",

".mpg",".mpeg",".mid",".midi",".smf",".jet",

".rtttl",".imy",".xmf",".mp4",".m4a",

".m4v",".3gp",".3gpp",".3g2",".3gpp2",

".amr",".awb",".wma",".wmv"

};

【解决办法】将Sqlitedb文件，先改名为.jpg文件，放在assets中，然后在程序第一次启动时，改名拷贝到/data/data