2017-02-23 120 views
0

有人能幫助我我不知道爲什麼我得到這個錯誤。指定的孩子已經有父母,創建回收視圖

致命異常:主 工藝:com.sangra.igurdwara,PID:24038 java.lang.IllegalStateException:指定的子已具有 父。您必須先調用子對象的父對象的removeView()。 at android.view.ViewGroup.addViewInner(ViewGroup.java:4659) at android.view.ViewGroup.addView(ViewGroup.java:4495) at android.view.ViewGroup.addView(ViewGroup.java:4436) at android.support.v7.widget.RecyclerView $ 5.addView(RecyclerView.java:676) at android.support.v7.widget.ChildHelper.addView(ChildHelper.java:107) at android.support.v7.widget.RecyclerView $ LayoutManager.addViewInt(RecyclerView.java:7399) at android.support.v7.widget.RecyclerView $ LayoutManager.addView(RecyclerView.java:7357) at android.support.v7.widget.RecyclerView $ LayoutManager.addView(RecyclerView .java:7345) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1459) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1408) at android.support.v7.widget。 LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:580) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3374) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3183) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3627) at android.view.View.layout(View.java:17993) at android.view.ViewGroup.layout(ViewGroup.java: 5817) 在android.widget.LinearLayout.setChildFrame(LinearLayout.java:1742) 在android.widget.LinearLayout.layoutHorizo​​ntal(LinearLayout.java:1731) 在android.widget.LinearLayout.onLayout(LinearLayout.java:1496) 在android.view.View.layout(View.java:17993) 在android.view.ViewGroup.layout(ViewGroup.java:5817) 在android.widget.FrameLayout.layoutChildren(FrameLayout.java:344) 在機器人。 (android.view.java:17993) at android.view.ViewGroup.layout(ViewGroup.java:5817) at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:437) at android.view.View.layout(View.java:17993) at android.view.ViewGroup.layout(ViewGroup.java:5817 ) 在android.widget.FrameLayout.layoutChildren(FrameLayout.java:344) 在android.widget.FrameLayout.onLayout(FrameLayout.java:281) 在android.view.View.layout(View.java:17993) 在android.widget.LineoutLayout.layoutVertical(LinearLayout.java:1585) (android.widget.Linear.Layout.setChildFrame(LinearLayout.java:1742) )在android.view.ViewGroup.layout(ViewGroup.java:5817) 在android.view.View.Group.layout(ViewGroup。)上的android.view.View.layout(View.java:17993) 處的android.widget.LinearLayout.onLayout(LinearLayout.java:1494) 。java:5817) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:344) at android.widget.FrameLayout.onLayout(FrameLayout.java:281) at com.android.internal.policy.PhoneWindow $ DecorView。 onLayout(PhoneWindow.java:3172) at android.view.View.layout(View.java:17993) at android.view.ViewGroup.layout(ViewGroup.java:5817) at android.view.ViewRootImpl.performLayout( ViewRootImpl.java:2759) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2460) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1528) at android.view.ViewRootImpl $ Trav ersalRunnable.run(ViewRootImpl.java:7524) at android.view.Choreographer $ CallbackRecord.run(Choreographer.java:911) at android.view.Choreographer.doCallbacks(Choreographer.java:686) at android.view。 Chronographer.doFrame(Choreographer.java:622) at android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:897) at android.os.Handler.handleCallback(Handler.java:739) at android.os。 Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:7325) at java.lang.refle ct.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120 )

public class TenantAdapter extends RecyclerView.Adapter<TenantAdapter.TenantViewHolder> { 

    private List<Tenant> values; 
    private final OnItemClickListener listener; 

    public TenantAdapter (List<Tenant> values, OnItemClickListener listener) { 
    this.values = values; 
    this.listener = listener; 
    } 

    public interface OnItemClickListener { 
    void onItemClick(Tenant tenant); 
    } 


    static class TenantViewHolder extends RecyclerView.ViewHolder { 

    TextView nameTextView; 

    TenantViewHolder(TextView itemView) { 
     super(itemView); 
     nameTextView = itemView; 
    } 

    void bind(final Tenant tenant, final OnItemClickListener listener){ 
     nameTextView.setText(tenant.getName()); 
     itemView.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       listener.onItemClick(tenant); 
      } 
     }); 
    } 
    } 


    @Override 
    public TenantViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View rowView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_tenant, parent, false); 
    TextView nameTextView = (TextView) rowView.findViewById(R.id.item_tenant_name); 
    TenantViewHolder tenantViewHolder = new TenantViewHolder(nameTextView); 
    return tenantViewHolder; 
    } 

    @Override 
    public void onBindViewHolder(TenantViewHolder holder, int position) { 
    holder.bind(values.get(position), listener); 
    } 

    @Override 
    public int getItemCount() { 
    return values.size(); 
    } 

} 

public class TenantActivity extends AppCompatActivity { 

    private RecyclerView recyclerView; 
    private RecyclerView.Adapter adapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_tenant); 
    recyclerView = (RecyclerView) findViewById(R.id.activity_tenant_recycler_view); 
    recyclerView.setHasFixedSize(true); 
    LinearLayoutManager layoutManager = new LinearLayoutManager(this); 
    recyclerView.setLayoutManager(layoutManager); 
    List<Tenant> values = new ArrayList<>(); 
    Tenant temp = new Tenant(); 
    temp.setName("Gurdwara Guru Nanak Mission Sewa Society"); 
    values.add(temp); 
    adapter = new TenantAdapter(values, new TenantAdapter.OnItemClickListener() { 
     @Override 
     public void onItemClick(Tenant tenant) { 
      TenantActivity.this.startActivity(new Intent(TenantActivity.this, HomeActivity.class)); 
     } 
    }); 
    recyclerView.setAdapter(adapter); 
    } 

} 

回答

1

你逝去的孩子的TextView在ViewHolder的構造函數是不對的。您應該傳遞父視圖並將其解包到構造函數中。

static class TenantViewHolder extends RecyclerView.ViewHolder { 

    TextView nameTextView; 

    TenantViewHolder(View itemView) { 
     super(itemView); 
     nameTextView = (TextView) itemView.findViewById(R.id.item_tenant_name); 
    } 
} 

並在您的適配器只是直接通過充氣視圖。

@Override 
public TenantViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View rowView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_tenant, parent, false); 
    TenantViewHolder tenantViewHolder = new TenantViewHolder(rowView); 
    return tenantViewHolder; 
} 
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