升级安装Android应用程序

AndroidManifest

添加权限：

创建PictureFileProvider：

```



``` 
class PictureFileProvider: FileProvider() {}
 
<provider    android:name="xxx.PictureFileProvider"android:authorities="${applicationId}.fileProvider"    android:exported="false"    android:grantUriPermissions="true">    <meta-data          android:name="android.support.FILE_PROVIDER_PATHS"          android:resource="@xml/file_paths" /></provider>
 
res下 xml/file_path.xml
 
<?xml version="1.0" encoding="utf-8"?><resources>    <paths>        <external-path            name="professionapplication_APK"            path="" />        <external-path path="professionapplication/file" name="apkpath" />    </paths></resources>
 
//path=..../professionapplication/file/xxx.apk 对应provider的路径    private void installApk(String path) {    //检测8.0的安装应用权限        if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.O) {            boolean hasInstallPermission = getPackageManager().canRequestPackageInstalls();            if (!hasInstallPermission) {                startInstallPermissionSettingActivity();                return;            }        }        File apkfile = new File(path);        if (!apkfile.exists()) {            return;        }        Intent intent = new Intent(Intent.ACTION_VIEW);        //判断是否是AndroidN以及更高的版本        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);            Uri contentUri = FileProvider.getUriForFile(this, BuildConfig.APPLICATION_ID + ".fileProvider", apkfile);            intent.setDataAndType(contentUri, "application/vnd.android.package-archive");        } else {            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            intent.setDataAndType(Uri.fromFile(apkfile), "application/vnd.android.package-archive");        }        startActivity(intent);
 
    /**     * 跳转到设置-允许安装未知来源-页面     */    @RequiresApi(api = Build.VERSION_CODES.O)    private void startInstallPermissionSettingActivity() {        Uri packageUri = Uri.parse("package:" + getPackageName());        Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, packageUri);        startActivityForResult(intent, UNKNOWN_APP_SOURCES_REQUEST_CODE);    }
 
    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (resultCode == RESULT_OK && requestCode == UNKNOWN_APP_SOURCES_REQUEST_CODE) {            installApk();        }    }

标签： 权限 路径 来源 版本