添加时RecyclerView addInArray错误
当我在List<OrderList>添加loadOrdersData()任何项时，它会抛出：
已调用D / ViewGroup：addInArray，this = android.support.v7.widget.RecyclerView {41cab8f0 VFED .... .F .... ID 0,0-480,770＃7f0c0073 app：id / rv} call stack = java .lang.Throwable：addInArray在android.view.ViewGroup.addInArray（ViewGroup.java:3786）在android.view.ViewGroup.addViewInner（ViewGroup.java:3740）在android.view.ViewGroup.addView（ViewGroup.java:3564 ）在android.view.ViewGroup.addView（ViewGroup.java:3509）在android.support.v7.widget.RecyclerView $ 5.addView（RecyclerView.java:649）在android.support.v7.widget.ChildHelper.addView（ChildHelper的.java：107）在android.support.v7.widget.RecyclerView $ LayoutManager.addViewInt（RecyclerView.java:7115）在android.support.v7.widget.RecyclerView $ LayoutManager.addView（RecyclerView.java:7073）在机器人。 support.v7.widget.RecyclerView $ LayoutManager.addView（RecyclerView.java:7061）at android.support.v7.widget.LinearLayoutManager.layoutChunk（LinearLayoutManager.java:1428）at android.support.v7.widget.LinearLayoutManager.fill（ LinearLayoutManager.java： 1377）at android.support.v7.widget.LinearLayoutManager.onLayoutChildren（LinearLayoutManager.java:578）at android.support.v7.widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java:3315）at android.support.v7.widget.RecyclerView .dispatchLayout（RecyclerView.java:3124）在android.support.v7.widget.RecyclerView.onLayout（RecyclerView.java:3568）在android.view.View.layout（View.java:15125）在android.view.ViewGroup。 android.view.View.layout（View.java:15125）android.view.ViewGroup.layout上的android.support.v4.widget.DrawerLayout.onLayout（DrawerLayout.java:1197）的布局（ViewGroup.java:4862） （ViewGroup.java:4862）在android.widget.FrameLayout.layoutChildren（FrameLayout.java:515）在android.widget.FrameLayout.onLayout（FrameLayout.java:450）在android.view.View.layout（View.java： 15125）在android.view.View.layout（View.java:15125）处的android.support.v7.widget.ActionBarOverlayLayout.onLayout（ActionBarOverlayLayout.java:433）处的android.view.ViewGroup.layout（ViewGroup.java:4862） ）在android.view.V 在android.widget.FrameLayout.layoutChildren（FrameLayout.java:515）在android.widget.FrameLayout.onLayout（FrameLayout.java:450）android.view.View.layout（视图）上的iewGroup.layout（ViewGroup.java:4862） .java：15125）在android.widget.LineoutLayout.setChildFrame（LinearLayout.java:1888）android.widget.LinearLayout.layoutVertical（LinearLayout.java:1742）android.view.ViewGroup.layout（ViewGroup.java:4862）在android.widget.LinearLayout.onLayout（LinearLayout.java:1651）在android.view.View.layout（View.java:15125）在android.view.ViewGroup.layout（ViewGroup.java:4862）在android.widget。在android.view.View.layout（ViewGroup.View）上的android.view.View.layout（View.java:15125）android.widget.FrameLayout.onLayout（FrameLayout.java:450）FrameLayout.layoutChildren（FrameLayout.java:515） .java：4862）at android.view.ViewRootImpl.performLayout（ViewRootImpl.java:2323）at android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:2029）at android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1192）在...处 ndroid.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java:6231）at android.view.Choreographer $ CallbackRecord.run（Choreographer.java:788）at android.view.Choreographer.doCallbacks（Choreographer.java:591）at android .view.Choreographer.doFrame（Choreographer.java:560）at android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:774）at android.os.Handler.handleCallback（Handler.java:808）at android.os。 Handler.dispatchMessage（Handler.java:103）在android.os.Looper.loop（Looper.java:193）在android.app.ActivityThread.main（ActivityThread.java:5305）在java.lang.reflect.Method.invokeNative （Native Method）at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:824）at com.android.internal.os（java.lang.reflect.Method.invoke（Method.java:515） .ZygoteInit.main（ZygoteInit.java:640）at dalvik.system.NativeStart.main（Native Method）
我试着添加： adapter.notifyDataSetChanged(); 在setAdapter()中的loadOrdersData()但它没有任何意义。 有没有人看到它是由什么造成的？
代码如下：
主要活动：
public class CourierActivity extends AppCompatActivity {
private TableLayout orderTable;
private RecyclerView recyclerView;
private RecycleAdapter adapter;
private List<OrderListItem> listItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.courier_main);
recyclerView = (RecyclerView) findViewById(R.id.rv);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(CourierActivity.this));
adapter = new RecycleAdapter(listItems, getApplicationContext());
recyclerView.setAdapter(adapter);
loadOrdersData();
}
private void loadOrdersData() {
RequestQueue queue = Volley.newRequestQueue(this);
StringRequest sr = new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
listItems = new ArrayList<>();
try {
String rsp = new String(response.getBytes("ISO-8859-1"), "UTF-8");
JSONArray orders = new JSONArray(rsp);
for (int i = 0; i < orders.length(); i++) {
OrderListItem listItem = new OrderListItem(
// ..
);
listItems.add(listItem);
}
adapter = new RecycleAdapter(listItems, getApplicationContext());
recyclerView.setAdapter(adapter);
} catch (JSONException | UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT);
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
return params;
}
};
queue.add(sr);
}
}
OrderListItem：
public class OrderListItem {
private String name;
private String status;
private String price;
private String courier;
public OrderListItem(String name, String status, String price, String courier) {
this.name = name;
this.status = status;
this.price = price;
this.courier = courier;
}
public String getName() { return name; }
public String getStatus() { return status;}
public String getPrice() { return price; }
public String getCourier() { return courier; }
}
RecycleAdapter：
public class RecycleAdapter extends RecyclerView.Adapter<RecycleAdapter.ViewHolder> {
private List<OrderListItem> listItems;
private Context context;
public RecycleAdapter(List<OrderListItem> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.rv_item, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
OrderListItem listItem = listItems.get(position);
holder.TextViewName.setText(listItem.getName());
holder.TextViewStatus.setText(listItem.getStatus());
holder.TextViewPrice.setText(listItem.getPrice());
holder.TextViewCourier.setText(listItem.getCourier());
}
@Override
public int getItemCount() {
int count = 0;
if (listItems != null && !listItems.isEmpty()) {
count = listItems.size();
}
return count;
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView TextViewName;
public TextView TextViewStatus;
public TextView TextViewPrice;
public TextView TextViewCourier;
public ViewHolder(View itemView) {
super(itemView);
TextViewName = (TextView) itemView.findViewById(R.id.orderListName);
TextViewStatus = (TextView) itemView.findViewById(R.id.orderListStatus);
TextViewPrice = (TextView) itemView.findViewById(R.id.orderListPrice);
TextViewCourier = (TextView) itemView.findViewById(R.id.orderListCourier);
}
}
}
@布局/ rv_item.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_margin="@dimen/activity_horizontal_margin"
android:layout_height="wrap_content"
android:layout_width="match_parent">
<LinearLayout
android:padding="@dimen/activity_horizontal_margin"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/orderListName"
android:text="Order name"
android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/orderListStatus"
android:text="Status"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/orderListPrice"
android:text="Price"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/orderListCourier"
android:text="Courier"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
@布局/ main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.example.seether.myapplication.CourierActivity"
android:background="#fff"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/drawerLayout">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv"/>
</android.support.v4.widget.DrawerLayout>
编辑 。 如果我将自定义数据输入到listItems则完美无缺的警告。
试试这种方式
CourierActivity.java
public class CourierActivity extends AppCompatActivity {
...
//Don't forget to intialize your List
private List<OrderListItem> listItems = new ArrayList<OrderListItem>();
...
private void loadOrdersData() {
RequestQueue queue = Volley.newRequestQueue(this);
StringRequest sr = new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
listItems = new ArrayList<>();
try {
String rsp = new String(response.getBytes("ISO-8859-1"), "UTF-8");
JSONArray orders = new JSONArray(rsp);
for (int i = 0; i < orders.length(); i++) {
OrderListItem listItem = new OrderListItem(
// ..
);
listItems.add(listItem);
}
//set list to adapter this way
adapter.setList(listItems);
} catch (JSONException | UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT);
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
return params;
}
};
queue.add(sr);
}
}
RecycleAdapter.java
public class RecycleAdapter extends RecyclerView.Adapter<RecycleAdapter.ViewHolder> {
private List<OrderListItem> listItems;
private Context context;
public RecycleAdapter(List<OrderListItem> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
public setList(List<OrderListItem> listItems){
//add list to parent list and notify your adapter
this.listItems.addAll(listItems);
notifyDataSetChanged();
}
...
}
编辑1：
main.xml中
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.example.seether.myapplication.CourierActivity"
android:background="#fff"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/drawerLayout">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv"/
</LinearLayout>
使用
adapter = new RecycleAdapter(listItems, CourierActivity.this);
代替
adapter = new RecycleAdapter(listItems, getApplicationContext());
在您的RecyclerView添加方向
android:orientation="vertical"
更新这个：
String rsp = new String(response.getBytes(), "UTF-8");
我做了一些改变，并写下评论。 试试看，
public class CourierActivity extends AppCompatActivity {
private TableLayout orderTable;
private RecyclerView recyclerView;
private RecycleAdapter adapter;
//********* Initialize over here **********//
private List<OrderListItem> listItems = new ArrayList<>();
private Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.courier_main);
//********** Initialize *******//
mContext = CourierActivity.this;
recyclerView = (RecyclerView) findViewById(R.id.rv);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(CourierActivity.this));
//********* added class context *********//
adapter = new RecycleAdapter(listItems, mContext);
recyclerView.setAdapter(adapter);
loadOrdersData();
}
private void loadOrdersData() {
RequestQueue queue = Volley.newRequestQueue(this);
StringRequest sr = new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
//******** Remove this line *************//
listItems = new ArrayList<>();
//******** Add this line ************//
listItems.clear();
try {
String rsp = new String(response.getBytes("ISO-8859-1"), "UTF-8");
JSONArray orders = new JSONArray(rsp);
for (int i = 0; i < orders.length(); i++) {
OrderListItem listItem = new OrderListItem(
// ..
);
listItems.add(listItem);
}
//*********Remove these both lines **********//
adapter = new RecycleAdapter(listItems, getApplicationContext());
recyclerView.setAdapter(adapter);
//************ Add this line **********//
adapter.notifyDataSetChanged();
} catch (JSONException | UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT);
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
return params;
}
};
queue.add(sr);
}
}