android - 发现名称 : isImportantForAccessibility 的冲突 setter/getter

Question

我正在制作一个应用程序，它将在单击每个 GridView 项目时上传产品的值(value)和图像。

主 Activity .java

    package com.example.intuition.ivposcloud;
import android.media.Image;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import org.w3c.dom.Text;

import static android.R.attr.name;

public class MainActivity extends AppCompatActivity {
    // Write a message to the database
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference myRef = database.getReference("message");
    GridView grid;
    String[] web = {
            "Pizza",
            "Cheese",
            "Cake",
            "Icecream",
            "Chocolate shake",
            "coffee",
            "Cake2",
            "Yummy",
            "Chicken",
            "Tikka",
            "pizza2",
            "pizza3",
            "Butter",
            "Chocolate Cake",
            "Nothing"

    };

    String[] web1 = {
            "120",
            "111",
            "123",
            "12",
            "121",
            "155",
            "575",
            "72",
            "145",
            "251",
            "412",
            "124",
            "124",
            "412",
            "142"

    };


    int[] imageId = {
            R.drawable.image1,
            R.drawable.image2,
            R.drawable.image3,
            R.drawable.image4,
            R.drawable.image5,
            R.drawable.image6,
            R.drawable.image7,
            R.drawable.image8,
            R.drawable.image9,
            R.drawable.image10,
            R.drawable.image11,
            R.drawable.image12,
            R.drawable.image13,
            R.drawable.image14,
            R.drawable.image15

    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        CustomGrid adapter = new CustomGrid(MainActivity.this, web, imageId);
        grid = (GridView) findViewById(R.id.grid);
        grid.setAdapter(adapter);
        grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {
                Toast.makeText(MainActivity.this, "Clicked position at " + position, Toast.LENGTH_SHORT).show();
                Toast.makeText(MainActivity.this, "You Clicked at " + web[+position] + "price is " + web1[+position], Toast.LENGTH_SHORT).show();

//                final ImageView image = (ImageView) findViewById(R.id.grid_image);
                final TextView text = (TextView) findViewById(R.id.grid_text);
//                String ImageView = image.getImageMatrix().toString().trim();
                String TextView = text.getText().toString().trim();
                Item item = new Item();

//                myRef.child("Image").setValue(item);
                myRef.child("Text").setValue(text);

                //Value event listener for realtime data update
                myRef.addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot snapshot) {
                        for (DataSnapshot postSnapshot : snapshot.getChildren()) {
                            //Getting the data from snapshot
                            Item item = postSnapshot.getValue(Item.class);

                            //Adding it to a string
                            String string = "Item name: " + item.getText() + "\n Item Image: " + item.getImage() + "\n\n";

                            //Displaying it on textview
//                            textViewPersons.setText(string);
                        }
                    }

                    @Override
                    public void onCancelled(DatabaseError databaseError) {
                        System.out.println("Cannot Read Data" + DatabaseError.UNKNOWN_ERROR);
                    }

                });
            }
        });


    }

}

这是 - Item.java 类

    package com.example.intuition.ivposcloud;

import static android.R.attr.name;

/**
 * Created by intuition on 14-12-2016.
 */

public class Item {
    //name and address string
    private String image;
    private String text;

    public Item() {
      /*Blank default constructor essential for Firebase*/
    }
    //Getters and setters
    public String getImage() {
        return image;
    }

    public void setImage(String image) {
        this.image = image;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

这是我在运行应用程序后遇到的 LogCat fatal error 。

日志:

AndroidRuntime: FATAL EXCEPTION: main
                                               Process: com.example.intuition.ivposcloud, PID: 16884
                                               com.google.firebase.database.DatabaseException: Found conflicting getters for name: isImportantForAccessibility
                                                   at com.google.android.gms.internal.zzbqi$zza.<init>(Unknown Source)
                                                   at com.google.android.gms.internal.zzbqi.zzi(Unknown Source)
                                                   at com.google.android.gms.internal.zzbqi.zzax(Unknown Source)
                                                   at com.google.android.gms.internal.zzbqi.zzaw(Unknown Source)
                                                   at com.google.firebase.database.DatabaseReference.zza(Unknown Source)
                                                   at com.google.firebase.database.DatabaseReference.setValue(Unknown Source)
                                                   at com.example.intuition.ivposcloud.MainActivity$1.onItemClick(MainActivity.java:112)
                                                   at android.widget.AdapterView.performItemClick(AdapterView.java:299)
                                                   at android.widget.AbsListView.performItemClick(AbsListView.java:1152)
                                                   at android.widget.AbsListView$PerformClick.run(AbsListView.java:3014)
                                                   at android.widget.AbsListView$3.run(AbsListView.java:3865)
                                                   at android.os.Handler.handleCallback(Handler.java:808)
                                                   at android.os.Handler.dispatchMessage(Handler.java:103)
                                                   at android.os.Looper.loop(Looper.java:193)
                                                   at android.app.ActivityThread.main(ActivityThread.java:5333)
                                                   at java.lang.reflect.Method.invokeNative(Native Method)
                                                   at java.lang.reflect.Method.invoke(Method.java:515)
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
                                                   at dalvik.system.NativeStart.main(Native Method)

Answer 1

这行不通:

final TextView text = (TextView) findViewById(R.id.grid_text);
myRef.child("Text").setValue(text);

Firebase 数据库只能存储 JSON 类型，因此您不能将 TextView 传递给它。

您可能希望将 TextView 中的值存储在数据库中，您会这样做:

final TextView text = (TextView) findViewById(R.id.grid_text);
myRef.child("Text").setValue(text.getText().toString());