Android的ImageAdapter用的GridView的片

Android的ImageAdapter用的GridView的片

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Android的ImageAdapter用的GridView的片段

本文介绍了Android的ImageAdapter用的GridView的片段的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个GridView的一个适配器，可以作为一个活动。我试图把它放在一个片段，现在和转换的东西，但它不工作。当我包括我的活动IconFragmentSystem我得到一个强制关闭，当我尝试打开活动。

我知道这个活动的作品，因为我可以用其他的片段，并一切正常，所以我知道这个文件在我的问题所在。

 包com.designrifts.ultimatethemeui;
进口com.designrifts.ultimatethemeui.R;
进口android.content.Context;
进口android.content.Intent;
进口android.content.res.Resources;
进口android.net.Uri;
进口android.os.Bundle;
进口android.support.v4.app.Fragment;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget *。

进口的java.util.ArrayList;

公共类IconFragmentSystem扩展片段实现AdapterView.OnItemClickListener {
私有静态最后弦乐RESULT_OK = NULL;
公众开放的CONTENT_URI;

公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
        捆绑savedInstanceState）{

    查看查看= inflater.inflate（R.layout.main，集装箱，假）;

    super.onCreate（savedInstanceState）;
    INT iconSize = getResources（）getDimensionPixelSize（android.R.dimen.app_icon_size）。

    GridView控件的GridView =（GridView控件）getActivity（）findViewById（R.id.icon_grid）。
    gridview.setAdapter（新IconAdapter（这一点，iconSize））;
    gridview.setOnItemClickListener（本）;
    CONTENT_URI = Uri.parse（内容：//+ iconsProvider.class.getCanonicalName（））;
    返回查看;
}

@覆盖
公共无效onItemClick（适配器视图＆LT;＆GT;适配器视图，视图中查看，INT I，长L）{
    字符串图标= adapterView.getItemAtPosition（I）的ToString（）;
    意向书结果=新的意图（空，Uri.withAppendedPath（CONTENT_URI，图标））;
    的setResult（RESULT_OK，结果）;
    完（）;
}
私人无效的setResult（字符串resultOk，意向结果）{
    // TODO自动生成方法存根

}

私人无效结束（）{
    // TODO自动生成方法存根

}
私有类IconAdapter扩展了BaseAdapter {
    私人语境mContext;
    私人诠释mIconSize;
    公共IconAdapter（上下文mContext，INT iconsize）{
        超（）;
        this.mContext = mContext;
        this.mIconSize = iconsize;
        loadIcon（）;
    }

    公共IconAdapter（IconFragmentSystem iconssystem，INT iconSize）{
        // TODO自动生成构造函数存根
    }

    @覆盖
    公众诠释getCount将（）{
        返回mThumbs.size（）;
    }

    @覆盖
    公共对象的getItem（INT位置）{
        返回mThumbs.get（位置）;
    }

    @覆盖
    众长getItemId（INT位置）{
        返回的位置;
    }

    @覆盖
    公共查看getView（INT位置，查看convertView，ViewGroup中父）{
        ImageView的ImageView的;
        如果（convertView == NULL）{
            ImageView的=新ImageView的（mContext）;
            imageView.setLayoutParams（新GridView.LayoutParams（mIconSize，mIconSize））;
        } 其他 {
            ImageView的=（ImageView的）convertView;
        }
        imageView.setImageResource（mThumbs.get（位置））;
        返回ImageView的;
    }

    私人的ArrayList＆LT;整数GT; mThumbs;
    ////////////////////////////////////////////////
    私人无效loadIcon（）{
        mThumbs =新的ArrayList＆LT;整数GT;（）;

        最后的资源资源= getResources（）;
        最后弦乐的packageName = getActivity（）getApplication（）getPackageName（）。

        addIcon（资源的packageName，R.array.systemicons）;

    }
    私人无效addIcon（资源资源，串的packageName，INT表）{
        最终的String []演员= resources.getStringArray（名单）;
        对于（字符串加：演员）{
            INT RES = resources.getIdentifier（多余的，绘制的packageName）;
            如果（水库！= 0）{
                最终诠释thumbRes = resources.getIdentifier（多余的，绘制的packageName）;
                如果（thumbRes！= 0）{
                    mThumbs.add（thumbRes）;
                }
            }
            }
           }
        }
    }

我曾尝试不同的方式来实现这一点，但都失败了，我真的可以使用的帮助指点我在正确的方向。

这是我在布局XML 

 ＆LT; RelativeLayout的的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
        的xmlns：程序=htt​​p://schemas.android.com/apk/res-auto
        的xmlns：工具=htt​​p://schemas.android.com/tool​​s
        机器人：layout_width =match_parent
        机器人：layout_height =match_parent＆GT;
  ＆LT; GridView控件
    机器人：ID =@ + ID / GridView控件
    机器人：layout_width =FILL_PARENT
    机器人：layout_height =FILL_PARENT
    机器人：columnWidth中=90dp
    机器人：为numColumns =auto_fit
    机器人：verticalSpacing =10dp
    机器人：horizo​​ntalSpacing =10dp
    机器人：stretchMode =columnWidth中
    机器人：重力=中心
/＆GT;

    ＆LT; / RelativeLayout的＆GT;

解决方案

我是能够解决这个问题。

我改变了

 的GridView的GridView =（GridView控件）getActivity（）findViewById（R.id.icon_grid）。

到

 的GridView的GridView =（GridView控件）view.findViewById（R.id.icon_grid）;

和我也改变了

  gridview.setAdapter（新IconAdapter（这一点，iconSize））;

到

  gridview.setAdapter（新IconAdapter（getActivity（），iconSize））;

I have an adapter with gridview that works as an Activity. I am trying to place it in a Fragment now and converted things but it does not work. When I include the IconFragmentSystem in my Activity I get a force close when I try to open the Activity.

I know the Activity works because I can use other Fragments and everything is okay so I know my issue lies within this file.

package com.designrifts.ultimatethemeui;
import com.designrifts.ultimatethemeui.R;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.*;

import java.util.ArrayList;

public class IconFragmentSystem extends Fragment implements AdapterView.OnItemClickListener{
private static final String RESULT_OK = null;
public Uri CONTENT_URI;

public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.main, container, false);

    super.onCreate(savedInstanceState);
    int iconSize=getResources().getDimensionPixelSize(android.R.dimen.app_icon_size);

    GridView gridview = (GridView) getActivity().findViewById(R.id.icon_grid);
    gridview.setAdapter(new IconAdapter(this, iconSize));
    gridview.setOnItemClickListener(this);
    CONTENT_URI=Uri.parse("content://"+iconsProvider.class.getCanonicalName());
    return view;
}

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
    String icon=adapterView.getItemAtPosition(i).toString();
    Intent result = new Intent(null, Uri.withAppendedPath(CONTENT_URI,icon));
    setResult(RESULT_OK, result);
    finish();
}
private void setResult(String resultOk, Intent result) {
    // TODO Auto-generated method stub

}

private void finish() {
    // TODO Auto-generated method stub

}
private class IconAdapter extends BaseAdapter{
    private Context mContext;
    private int mIconSize;
    public IconAdapter(Context mContext, int iconsize) {
        super();
        this.mContext = mContext;
        this.mIconSize = iconsize;
        loadIcon();
    }

    public IconAdapter(IconFragmentSystem iconssystem, int iconSize) {
        // TODO Auto-generated constructor stub
    }

    @Override
    public int getCount() {
        return mThumbs.size();
    }

    @Override
    public Object getItem(int position) {
        return mThumbs.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(mIconSize, mIconSize));
        } else {
            imageView = (ImageView) convertView;
        }
        imageView.setImageResource(mThumbs.get(position));
        return imageView;
    }

    private ArrayList<Integer> mThumbs;
    ////////////////////////////////////////////////
    private void loadIcon() {
        mThumbs = new ArrayList<Integer>();

        final Resources resources = getResources();
        final String packageName = getActivity().getApplication().getPackageName();

        addIcon(resources, packageName, R.array.systemicons);

    }
    private void addIcon(Resources resources, String packageName, int list) {
        final String[] extras = resources.getStringArray(list);
        for (String extra : extras) {
            int res = resources.getIdentifier(extra, "drawable", packageName);
            if (res != 0) {
                final int thumbRes = resources.getIdentifier(extra,"drawable", packageName);
                if (thumbRes != 0) {
                    mThumbs.add(thumbRes);
                }
            }
            }
           }
        }
    }

I have tried different ways to implement this but all have failed and I could really use help pointing me in the right direction.

This is my xml in layout

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
  <GridView
    android:id="@+id/gridview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:columnWidth="90dp"
    android:numColumns="auto_fit"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:stretchMode="columnWidth"
    android:gravity="center"
/>

    </RelativeLayout>
解决方案

I was able to fix the issue

I changed 

    GridView gridview = (GridView) getActivity().findViewById(R.id.icon_grid);

to

    GridView gridview = (GridView) view.findViewById(R.id.icon_grid);

and I also changed

     gridview.setAdapter(new IconAdapter(this, iconSize));

to

     gridview.setAdapter(new IconAdapter(getActivity(), iconSize));

这篇关于Android的ImageAdapter用的GridView的片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

08-27 12:44
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