Android O打开安装未知来源应用权限

注：下载及安装前面已经提到。

在AndroidManifest.xml中添加<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />

public void apkNeedInstall(String address) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

            if (getPackageManager().canRequestPackageInstalls()) {

                install(address);//安装

            } else {

                //友好点的弹窗提示~  需要打开安装未知来源应用权限~ 点击确认

                toInstallPermissionSettingIntent();

            }

        } else {

          install(address);//安装

    }

private void toInstallPermissionSettingIntent() {//打开安装未知来源的设置界面

        Uri packageURI = Uri.parse("package:" + getPackageName());

        Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, packageURI);

        startActivityForResult(intent, INSTALL_PERMISS_CODE);

    }

@Override

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK && requestCode == INSTALL_PERMISS_CODE) {

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

                if (getPackageManager().canRequestPackageInstalls()) {//再次判断有没有授予

                    installApp(address);//安装

                }

            }

        }

    }