Question

以下是我在gridviews中动态创建ImageButtons的代码。当我运行活动时，ImageButtons无法点击。我尝试添加 android:descendantFocusability="blocksDescendants" 到xml文件，但这没有解决问题。

编辑：我更新了适用于ImageViews的适配器，而不是ImageButtons，但问题仍然存在。

这是我的自定义适配器：

    package com.example.myname.myproject;

import android.content.Context;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;

/**
 * Created by myname on 3/31/17.
 */

public class ImageArrayAdapter extends BaseAdapter {
    Context context;
    int[] currentResources;
    String[] currentIcons;


    public ImageArrayAdapter(Context context, String[] currentIcons, int[] currentResources){
        ImageArrayAdapter.this.context = context;
        ImageArrayAdapter.this.currentIcons = currentIcons;
        ImageArrayAdapter.this.currentResources = currentResources;
    }

    @Override
    public int getCount() {
        return currentResources.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {
            // if it's not recycled, initialize some attributes
            imageView = new ImageView(context);
            imageView.setLayoutParams(new GridView.LayoutParams(300, 300));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
            imageView.setBackgroundColor(Color.TRANSPARENT);
        } else {
            imageView = (ImageView) convertView;
        }
        imageView.setClickable(true);
        imageView.setImageResource(currentResources[position]);
        return imageView;
    }

}

以下是GridView的

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.myname.myproject.AdminControlTabbed$PlaceholderFragment">

<GridView
    android:id="@+id/templateGrid"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:numColumns="auto_fit"
    android:columnWidth="60dp"
    android:stretchMode="columnWidth"
    android:gravity="center"
    android:clickable="true"
    android:descendantFocusability="blocksDescendants"
    />

感谢您的帮助。

Answer 1

为什么不使用ImageViews代替ImageButtons。然后，您必须仅在已初始化它的活动类中为GridView设置OnItemClickListener。将适配器连接到它后，您可以附加一个clickListener，如下所示：

myGridView.setAdapter(this, currentIconsArray, currentResourcesArray);
myGridViewsetOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
              //code for handling onClick event
        }
    });

Answer 2

Activity.dispatchTouchEvent(MotionEvent)将其发送给其他听众

GridView内的ImageButton无法点击

2 个答案: