android开发,关于android app实现静默安装自己(系统签名)
产品需求,木有办法。android系统是跟厂商定制的,保证系统开机就运行我们的app,并且实现自己静默安装,完全自动化,无需人工操作。
网上有很多办法,
1、要么要通过android 源码拿到密钥文件,参考:http://www.cnblogs.com/brucenan/archive/2012/10/04/2711817.html
2、通过root权限,可以参考代码(已测试安装别人的apk可以,但是不能安装自己):
import java.io.File; import java.io.PrintWriter; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.util.Log; public class ApkController { /** * 描述: 安装 */ public static boolean install(String apkPath,Context context){ // 先判断手机是否有root权限 if(hasRootPerssion()){ // 有root权限,利用静默安装实现 return clientInstall(apkPath); }else{ // 没有root权限,利用意图进行安装 File file = new File(apkPath); if(!file.exists()) return false; Intent intent = new Intent(); intent.setAction("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive"); context.startActivity(intent); return true; } } /** * 描述: 卸载 */ public static boolean uninstall(String packageName,Context context){ if(hasRootPerssion()){ // 有root权限,利用静默卸载实现 return clientUninstall(packageName); }else{ Uri packageURI = Uri.parse("package:" + packageName); Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageURI); uninstallIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(uninstallIntent); return true; } } /** * 判断手机是否有root权限 */ public static boolean hasRootPerssion(){ PrintWriter PrintWriter = null; Process process = null; try { process = Runtime.getRuntime().exec("su"); PrintWriter = new PrintWriter(process.getOutputStream()); PrintWriter.flush(); PrintWriter.close(); int value = process.waitFor(); return returnResult(value); } catch (Exception e) { e.printStackTrace(); }finally{ if(process!=null){ process.destroy(); } } return false; } /** * 静默安装 */ public static boolean clientInstall(String apkPath){ PrintWriter PrintWriter = null; Process process = null; try { process = Runtime.getRuntime().exec("su"); PrintWriter = new PrintWriter(process.getOutputStream()); PrintWriter.println("chmod 777 "+apkPath); PrintWriter.println("export LD_LIBRARY_PATH=/vendor/lib:/system/lib"); PrintWriter.println("pm install -r "+apkPath); // PrintWriter.println("exit"); PrintWriter.flush(); PrintWriter.close(); int value = process.waitFor(); return returnResult(value); } catch (Exception e) { e.printStackTrace(); }finally{ if(process!=null){ process.destroy(); } } return false; } /** * 静默卸载 */ public static boolean clientUninstall(String packageName){ PrintWriter PrintWriter = null; Process process = null; try { process = Runtime.getRuntime().exec("su"); PrintWriter = new PrintWriter(process.getOutputStream()); PrintWriter.println("LD_LIBRARY_PATH=/vendor/lib:/system/lib "); PrintWriter.println("pm uninstall "+packageName); PrintWriter.flush(); PrintWriter.close(); int value = process.waitFor(); return returnResult(value); } catch (Exception e) { e.printStackTrace(); }finally{ if(process!=null){ process.destroy(); } } return false; } /** * 启动app * com.exmaple.client/.MainActivity * com.exmaple.client/com.exmaple.client.MainActivity */ public static boolean startApp(String packageName,String activityName){ boolean isSuccess = false; String cmd = "am start -n " + packageName + "/" + activityName + " \n"; Process process = null; try { process = Runtime.getRuntime().exec(cmd); int value = process.waitFor(); return returnResult(value); } catch (Exception e) { e.printStackTrace(); } finally{ if(process!=null){ process.destroy(); } } return isSuccess; } private static boolean returnResult(int value){ // 代表成功 if (value == 0) { return true; } else if (value == 1) { // 失败 return false; } else { // 未知情况 return false; } } }
3、通过走系统应用的方法(因为机器是我们定制生产,所以可以将app预置到system/app目录下,无需安装,直接重启,可以看到系统再次开机时会显示系统升级,然后就可以看到我们的app安装成功),可以试着先adb命令执行,再复制到代码中去执行。注意,如果app的lib中有.so文件,则还需要将.so文件拷贝到system/libs目录,否则报错(我的解决办法是暂时将用到.so文件的地方注释掉,等有时间再做)
adb 命令:
$ adb push SecureSetting.apk /sdcard/ // 上传要安装的文件,为安装做准备。 $ adb shell $ su // 切换到 root 用户。如果没有获得 Root 权限,这一步不会成功。 # mount //显示当前mount情况 # mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system // 让分区可写。 # cat /sdcard/SecureSetting.apk > /system/app/SecureSetting.apk // 这一步可以用 cp 实现,但一般设备中没有包含该命令。如果使用 mv 会出现错误:failed on '/sdcard/NetWork.apk' - Cross-device link。 chmod 777 chetou.apk # mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system // 还原分区属性,只读。 # exit $ exit
代码执行:
/** * 将文件复制到system/app 目录 * @param apkPath 特别注意格式:该路径不能是:/storage/emulated/0/app/QDemoTest4.apk 需要是:/sdcard/app/QDemoTest4.apk * @return */ public static boolean copy2SystemApp(String apkPath){ PrintWriter PrintWriter = null; Process process = null; String appName = "test.apk",cmd; try { process = Runtime.getRuntime().exec("su"); PrintWriter = new PrintWriter(process.getOutputStream()); cmd = "mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system"; Log.e("copy2SystemApp", cmd); PrintWriter.println(cmd); cmd = "cat "+apkPath+" > /system/app/"+appName; Log.e("copy2SystemApp", cmd); PrintWriter.println(cmd); cmd = "chmod 777 /system/app/"+appName +" -R"; Log.e("copy2SystemApp", cmd); PrintWriter.println(cmd); cmd = "mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system"; Log.e("copy2SystemApp", cmd); PrintWriter.println(cmd); PrintWriter.println("reboot"); //重启 PrintWriter.println("exit"); PrintWriter.flush(); PrintWriter.close(); int value = process.waitFor(); return returnResult(value); } catch (Exception e) { e.printStackTrace(); }finally{ if(process!=null){ process.destroy(); } } return false; }
注意代码里有差异性,因为需要给文件 chmod 777权限,否则不会自动升级安装。流程可以参考:http://blog.163.com/wwj0925@126/blog/static/19120110201522242241563/