更新
现在加载视图，在我实现之后： -
holder.time.setText(Integer.toString(user.getTime()));
到
E/RecyclerView: No adapter attached; skipping layout
但我仍然在日志中收到此消息： -
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/recycle"/>
对此有何想法？
我使用volley从服务器获取数据，然后使用Cardview在Recycler视图中显示数据。但它崩溃的应用程序错误说适配器没有附加。虽然我已经连接了适配器。我无法找到问题。请帮助。
主要布局文件
public class Leaderboard extends AppCompatActivity {
private static final String URL = "URL";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_leaderboard);
final RecyclerView recycler = (RecyclerView) findViewById(R.id.recycle);
recycler.setLayoutManager(new LinearLayoutManager(Leaderboard.this));
StringRequest request = new StringRequest(URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.i("TAG",response);
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
User[] users = gson.fromJson(response, User[].class);
recycler.setAdapter(new RecyclerviewAdapter(Leaderboard.this,users));
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(Leaderboard.this, "Something Went Wrong!", Toast.LENGTH_SHORT).show();
}
});
RequestQueue queue = Volley.newRequestQueue(this);
queue.add(request);
}
}
主Java类
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:textSize="24dp"
android:padding="8dp"
android:textStyle="bold"
android:text="1."
android:gravity="center"
android:id="@+id/rank"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="6"
android:textSize="24dp"
android:padding="8dp"
android:textStyle="bold"
android:text="Ravi Bhardwaj"
android:id="@+id/name"/>
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="4"
android:textSize="24dp"
android:padding="8dp"
android:textStyle="bold"
android:gravity="center"
android:text="00:04:10"
android:id="@+id/time"/>
</LinearLayout>
Cardview
public class RecyclerviewAdapter extends RecyclerView.Adapter<RecyclerviewAdapter.RecyclerViewHolder> {
private Context context;
private User[] data;
public RecyclerviewAdapter(Context context, User[] data){
this.context = context;
this.data = data;
}
@Override
public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.one_row_leaderboard,parent,false);
return new RecyclerViewHolder(view);
}
@Override
public void onBindViewHolder(RecyclerViewHolder holder, int position) {
User user = data[position];
holder.name.setText(user.getName());
holder.time.setText(user.getTime());
// holder.rank.setText(""+data[position+1]);
}
@Override
public int getItemCount() {
return data.length;
}
public class RecyclerViewHolder extends RecyclerView.ViewHolder{
TextView rank,name,time;
public RecyclerViewHolder(View itemView) {
super(itemView);
rank = (TextView) itemView.findViewById(R.id.rank);
name = (TextView) itemView.findViewById(R.id.name);
time = (TextView) itemView.findViewById(R.id.time);
}
}
}
RecyclerviewAdapter
public class User {
@SerializedName("name")
@Expose
private String name;
@SerializedName("time")
@Expose
private Integer time;
@SerializedName("id")
@Expose
private String id;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getTime() {
return time;
}
public void setTime(Integer time) {
this.time = time;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
我的模态课程
E/RecyclerView: No adapter attached; skipping layout
10-21 21:38:15.160 6718-6718/com.ravibhardwaj.kbcmaster I/TAG: [{"name":"sm","time":240,"id":"19760377672"},{"name":"Ravi Bhardwaj","time":246,"id":"1976037352655019"},{"name":"Ravi Bhard","time":356,"id":"1976037352655566"},{"name":"Ravi Bhard","time":555,"id":"1976037352655566"}]
10-21 21:38:15.255 6718-6718/com.ravibhardwaj.kbcmaster W/ResourceType: No package identifier when getting value for resource number 0x000000f0
10-21 21:38:15.259 6718-6718/com.ravibhardwaj.kbcmaster E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ravibhardwaj.kbcmaster, PID: 6718
android.content.res.Resources$NotFoundException: String resource ID #0xf0
at android.content.res.HwResources.getText(HwResources.java:446)
at android.widget.TextView.setText(TextView.java:4660)
at com.ravibhardwaj.kbcmaster.RecyclerviewAdapter.onBindViewHolder(RecyclerviewAdapter.java:34)
at com.ravibhardwaj.kbcmaster.RecyclerviewAdapter.onBindViewHolder(RecyclerviewAdapter.java:14)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1551)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3312)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3844)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1766)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1610)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1519)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1766)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1610)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1519)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:774)
at android.view.View.layout(View.java:17694)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2513)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2228)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1366)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6768)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:926)
at android.view.Choreographer.doCallbacks(Choreographer.java:735)
at android.view.Choreographer.doFrame(Choreographer.java:667)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:912)
at android.os.Handler.handleCallback(Handler.java:761)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6577)
at java.lang.reflect.Method.invoke(Native Method)
10-21 21:38:15.259 6718-6718/com.ravibhardwaj.kbcmaster E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
10-21 21:38:15.272 6718-6718/com.ravibhardwaj.kbcmaster I/Process: Sending signal. PID: 6718 SIG: 9
我收到错误
JSON我无法在此处找到问题。请帮助
答案 0 :(得分：1)
尝试更改代码
holder.time.setText(user.getTime());
到
holder.time.setText(Integer.toString(user.getTime()));
答案 1 :(得分：1)
问题在于此代码
holder.time.setText(user.getTime());
由于textview重载了setText（int）
应该与字符串资源一起使用的方法，这些资源将通过定义为R.string的整数来解析。*。
在你的情况下，user.getTime（）返回整数值，它将被视为预定义的XML字符串资源（在你的情况下不存在）。
答案 2 :(得分：1)
E/RecyclerView: No adapter attached; skipping layout
这意味着没有适配器，因此将跳过布局，这不是错误信息。如果您不想再看到它，请附加一个空的适配器，然后更新适配器。
这是你的错误：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ravibhardwaj.kbcmaster, PID: 6718
android.content.res.Resources$NotFoundException: String resource ID #0xf0
因此：
holder.time.setText(user.getTime());
由于：
public Integer getTime() {
return time;
}
这是一个整数，setText()可以接受String或int，因为R.string.something等资源是int。解决它：
holder.time.setText(String.valueOf(user.getTime()));