1
Ich bin ein Anfänger in Android Studio. Mein Ziel ist es, meine Daten vom Wamp-Server mit PHP mit MySQL in RecyclerView mit CardView zu laden. Aber alles läuft gut. Aber ich bekomme die Ausgabe nicht, wenn ich meine Apps starte.CardView wird nicht auf meinem RecycleView angezeigt, wenn Daten lokal aus PHP/MySQL gepusht werden
Meine Abhängigkeit ist das, bitte
public class Main2Activity extends AppCompatActivity {
ProgressDialog progressDialog;
List<companyCardDetailsClass> rowListItem;
private RecyclerView recyclerView;
private GridLayoutManager gridLayoutManager;
private CompanyCardRecycleViewAdapterClass adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
rowListItem = new ArrayList<>();
recyclerView = (RecyclerView)findViewById(R.id.recycler_view1) ;
gridLayoutManager = new GridLayoutManager(this,1);
recyclerView.setLayoutManager(gridLayoutManager);
recyclerView.setHasFixedSize(true);
adapter = new CompanyCardRecycleViewAdapterClass(this, rowListItem);
recyclerView.setAdapter(adapter);
load_data_from_server(0);
}
private void load_data_from_server(int id) {
AsyncTask<Integer,Void,Void> task = new AsyncTask<Integer, Void, Void>() {
@Override
protected Void doInBackground(Integer... integers) {
//send request to server for data
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url("http://192.168.161.2/stamploaddatabase/getMerchantDetails.php").build();
try {
//get response from server in form of JSon array
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
for (int i = 0; i < array.length(); i++) {
JSONObject object = array.getJSONObject(i);
companyCardDetailsClass data = new companyCardDetailsClass(object.getInt("user_id"), object.getString("companyname"), object.getString("location"),
object.getInt("logo"));
rowListItem.add(data);
}
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
adapter.notifyDataSetChanged();
}
};
task.execute(id);
}
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app2="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_margin="5dp"
card_view:cardCornerRadius="4dp"
card_view:contentPadding="10dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<ImageView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/image_company"
android:layout_gravity="center_horizontal"
android:scaleType="centerCrop"
android:layout_weight="0.25"
/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="8px">
<TextView
android:text="Text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/name_company"
card_view:textSize="14sp"
android:layout_weight="2.37"
android:textColor="@android:color/holo_red_light" />
<TextView
android:text="TextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/address_company"
card_view:textSize="12sp"
android:layout_weight="0.22"
android:layout_below="@+id/name_company"/>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/linear_layout2"
card_view:orientation="horizontal"
android:layout_gravity="right"
android:orientation="horizontal"
>
<Button
android:text="Redeem"
android:layout_width="112dp"
android:layout_height="32dp"
android:id="@+id/btn_redeem1"
android:paddingRight="20dp"
card_view:text="Redeem"
android:layout_weight="0.25"
android:background="@drawable/shape"/>
card_view:background="@color/btn_redeem"/>
<ImageView
android:layout_width="51dp"
android:layout_height="35dp"
android:src="@drawable/ic_like"
android:id="@+id/like"
/>
<ImageView
android:layout_width="51dp"
android:layout_height="35dp"
android:src="@drawable/ic_share"
android:id="@+id/share"
/>
</LinearLayout>
Adapter und Halter
Firebase eincompile 'com.facebook.android:facebook-android-sdk:[4,5)'
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:support-v4:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.google.firebase:firebase-core:10.2.4'
compile 'com.google.firebase:firebase-auth:10.2.4'
compile 'com.google.android.gms:play-services-auth:10.2.4'
compile 'com.android.support:design:25.3.1'
compile 'com.google.firebase:firebase-database:10.2.4'
compile 'com.squareup.okhttp3:okhttp:3.6.0'
compile 'com.mcxiaoke.volley:library-aar:1.0.0'
testCompile 'junit:junit:4.12'
Main2Activity Klasse ignorieren
public class CompanyCardRecycleViewAdapterClass extends RecyclerView.Adapter<CompanyCardRecycleViewAdapterClass.ViewHolder> { List<companyCardDetailsClass> itemList; private Context context; public CompanyCardRecycleViewAdapterClass(Context context, List<companyCardDetailsClass> itemList) { super(); this.itemList = itemList; this.context = context; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.company_card_list, parent, false); ViewHolder holder = new ViewHolder(view); return holder; } @Override public void onBindViewHolder(ViewHolder holder, int position) { holder.CompanyName.setText(itemList.get(position).getCompanyname()); holder.CompanyAddress.setText(itemList.get(position).getLocation()); holder.CompanyProfilePhoto.setImageResource(itemList.get(position).getImageCpny()); } @Override public int getItemCount() { return this.itemList.size(); } public class ViewHolder extends RecyclerView.ViewHolder { public TextView CompanyName; public TextView CompanyAddress; public ImageView CompanyProfilePhoto; public ImageView likeImage; public ImageView shareImage; public Button RedeemBtn; public ViewHolder(View view) { super(view); CompanyAddress =(TextView)itemView.findViewById(R.id.address_company); CompanyName = (TextView)itemView.findViewById(R.id.name_company); CompanyProfilePhoto = (ImageView)itemView.findViewById(R.id.image_company); likeImage = (ImageView)itemView.findViewById(R.id.like); shareImage = (ImageView)itemView.findViewById(R.id.share); RedeemBtn = (Button)itemView.findViewById(R.id.btn_redeem1); final RecyclerView recyclerView = (RecyclerView)itemView.findViewById(R.id.recycler_view1); } } } ** Meine Java-Klasse Daten **
public class companyCardDetailsClass {
private int id_company;
private String companyname;
private String location;
private int ImageCpny;
public companyCardDetailsClass() {
}
public companyCardDetailsClass(int id_company, String companyname, String location, int imageCpny) {
this.id_company = id_company;
this.companyname = companyname;
ImageCpny = imageCpny;
this.location = location;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public int getIdCompany(){return id_company;}
public void setId_company(int id_company){this.id_company = id_company;}
public String getCompanyname(){
return companyname;
}
public void setCompanyname (String companyname){
this.companyname = companyname;
}
public int getImageCpny(){
return ImageCpny;
}
public void setImageCpny(int ImageCpny){
this.ImageCpny = ImageCpny;
}
}
dann mein Layout Vorgang Layout mit recyclerView
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/content_main2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/tools"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.drake.stamploadproject.Main2Activity"
tools:showIn="@layout/activity_main2">
<android.support.v7.widget.RecyclerView
android:id = "@+id/recycler_view1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:layout_marginTop="5dp">
</android.support.v7.widget.RecyclerView>
cardView Layout-
Vielen Dank !!! – steve