我在应用程序中使用url链接从服务器发送和接收数据。如果有人反编译我的apk文件并获取源代码,则可以使用url发送垃圾邮件或进行一些无偿购买!
现在如何保护网址链接?
这是对我使用的服务器的请求示例。(我仍然使用本地服务器,直到完成应用程序为止)
public class GetProduct {
ArrayList<Product> arrayList;
ProgressDialog progressDialog;
String url = "http://192.168.43.46/fasabazar/android/getProductsFullInfo";
OnProductRecieved onProductRecieved = null;
public GetProduct(final OnProductRecieved onProductRecieved, final Context context) {
arrayList = new ArrayList<>();
progressDialog = new ProgressDialog(context);
this.onProductRecieved = onProductRecieved;
JsonArrayRequest request = new JsonArrayRequest(Request.Method.GET, url, null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
JSONArray jsonArray = (JSONArray) response;
progressDialog.dismiss();
onProductRecieved.OnRecieved(response);
// Toast.makeText(context, jsonArray.toString(), Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
progressDialog.show();
request.setRetryPolicy(new …
Run Code Online (Sandbox Code Playgroud) 我想从存储上的视频路径在 ImageView 中显示视频缩略图。是否有采用视频路径并返回缩略图位图的函数?我通过此代码获取视频路径:
public ArrayList<String> getAllMedia() {
HashSet<String> videoItemHashSet = new HashSet<>();
String[] projection = {MediaStore.Video.VideoColumns.DATA, MediaStore.Video.Media.DISPLAY_NAME};
Cursor cursor = getContext().getContentResolver().query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, null, null, null);
try {
cursor.moveToFirst();
do {
videoItemHashSet.add((cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA))));
} while(cursor.moveToNext());
cursor.close();
} catch(Exception e) {
e.printStackTrace();
}
ArrayList<String> downloadedList = new ArrayList<>(videoItemHashSet);
return downloadedList;
}
Run Code Online (Sandbox Code Playgroud) 我想通过改造和 rxjava 连接到服务器。当我使用 call 时它可以工作,一切都很好。但是当尝试使用 rxjava 时,它会遇到麻烦。错误文本:
无法找到 io.reactivex.Single 的调用适配器
在 build.gradle 中我实现了改造适配器。但我不知道问题是什么。这是我的等级:
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'io.reactivex.rxjava2:rxjava:2.2.8'
implementation 'com.squareup.retrofit2:retrofit:2.5.0'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.squareup.retrofit2:adapter-rxjava:2.5.0'
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
implementation "android.arch.persistence.room:runtime:1.1.1"
annotationProcessor "android.arch.persistence.room:compiler:1.1.1"
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api客户端代码:
public class ApiClient {
public static final String BASE_URL="http://192.168.1.100/digikala/";
private static Retrofit retrofit=null;
public static Retrofit getClient(){
if(retrofit==null){
retrofit=new Retrofit.Builder()
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.baseUrl(BASE_URL)
.build();
}
return retrofit;
}
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api服务代码:
public interface ApiService {
@GET("readamazing.php")
Single<List<Product>> getSingleProducts();
}
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主要活动代码:
ApiService apiService=ApiClient.getClient().create(ApiService.class);
apiService.getSingleProducts().subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new SingleObserver<List<Product>>() {
@Override
public void …
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