Android安装apk

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public void installApk() {

       File apkfile = new File(Environment.getExternalStorageDirectory(),

              strApkFile);

       Log.i("Update", apkfile.getAbsolutePath());

       if (!apkfile.exists()) {

           Log.d("Update", "文件不存在");

           return;

       }

       Log.i("Update", "启动");

       Intent i = new Intent(Intent.ACTION_VIEW);

       i.setDataAndType(Uri.parse("file://" + apkfile.toString()),

              "application/vnd.android.package-archive");

       startActivity(i);

    }

Android安装apk

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原文地址：http://www.cnblogs.com/PeijueerOrJacking/p/4468779.html