Question

所以在我的Android应用程序中，我有两个可滚动的选项卡，每个选项卡包含使用片段的Listview。一个是应用列表，另一个是空白。我的目标是添加一个加号按钮代替我的复选框所在的位置，并在另一个列表视图中复制该项目为空白。

enter image description here

我已经对此进行过研究，但我没有找到任何关于如何实现这一点的成功例子。

Android - Add an item from one ListView to another ListView?

这是我的片段，它返回了应用

package com.spicycurryman.getdisciplined10.app;

import android.app.ProgressDialog;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
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.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

import com.ibc.android.demo.appslist.app.ApkAdapter;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;



public class InstalledAppActivity extends Fragment
        implements OnItemClickListener {

    PackageManager packageManager;
    ListView apkList;

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

        setHasOptionsMenu(true);
        View rootView = inflater.inflate(R.layout.user_installed, container, false);
        packageManager = getActivity().getPackageManager();


        /*To filter out System apps*/

        apkList = (ListView) rootView.findViewById(R.id.applist);

        new LoadApplications(getActivity().getApplicationContext()).execute();


        return rootView;
    }

    /**
     * Return whether the given PackageInfo represents a system package or not.
     * User-installed packages (Market or otherwise) should not be denoted as
     * system packages.
     *
     * @param pkgInfo
     * @return boolean
     */
    private boolean isSystemPackage(PackageInfo pkgInfo) {
        return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) ? true
                : false;
    }

    private boolean isSystemPackage1(PackageInfo pkgInfo) {
        return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0) ? false
                : true;
    }


// Don't need in Fragment
/*@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.block, menu);
   // super.onCreateOptionsMenu(menu,inflater);
}*/

    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

    }


    private class LoadApplications extends AsyncTask<Void, Void, Void> {

        Context mContext;

        private ProgressDialog pDialog;
        List<PackageInfo> packageList1 = new ArrayList<PackageInfo>();

        public LoadApplications(Context context){
            Context mContext = context;
        }




        @Override
        protected Void doInBackground(Void... params) {

            List<PackageInfo> packageList = packageManager
                    .getInstalledPackages(PackageManager.GET_PERMISSIONS);


          /*  List<ApplicationInfo> list = mContext.getPackageManager().getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);


            for(int n = 0;n<list.size();n++){
                if ((list.get(n).flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP))
            }*/


            for(PackageInfo pi : packageList) {
                boolean b = isSystemPackage(pi);
                boolean c = isSystemPackage1(pi);

                if(!b || !c ) {
                    packageList1.add(pi);
                }
            }

            //sort by application name

            final PackageItemInfo.DisplayNameComparator comparator = new PackageItemInfo.DisplayNameComparator(packageManager);

            Collections.sort(packageList1, new Comparator<PackageInfo>() {
                @Override
                public int compare(PackageInfo lhs, PackageInfo rhs) {
                    return comparator.compare(lhs.applicationInfo, rhs.applicationInfo);
                }
            });

            return null;
        }

        @Override
        protected void onCancelled() {
            super.onCancelled();
        }

        @Override
        protected void onPreExecute() {
            pDialog = new ProgressDialog(InstalledAppActivity.this.getActivity());
            pDialog.setMessage("Loading your apps...");
            pDialog.show();

        }

        @Override
        protected void onPostExecute(Void result) {

            apkList.setAdapter(new ApkAdapter(getActivity(), packageList1, packageManager));

            if (pDialog.isShowing()){
                pDialog.dismiss();

            }


            super.onPostExecute(result);
        }


        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }

}

这是我的适配器类：

package com.ibc.android.demo.appslist.app;

import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.TextView;

import com.spicycurryman.getdisciplined10.app.R;

import java.util.List;

public class ApkAdapter extends BaseAdapter {


    List<PackageInfo> packageList;
    Activity context;
    PackageManager packageManager;
    boolean[] itemChecked;

    public ApkAdapter(Activity context, List<PackageInfo> packageList,
                      PackageManager packageManager) {
        super();
        this.context = context;
        this.packageList = packageList;
        this.packageManager = packageManager;
        itemChecked = new boolean[packageList.size()];
    }



    private class ViewHolder {
        TextView apkName;
        CheckBox ck1;
    }

    public int getCount() {
        return packageList.size();
    }

    public Object getItem(int position) {
        return packageList.get(position);
    }

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

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        final ViewHolder holder;

        LayoutInflater inflater = context.getLayoutInflater();

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.installed_apps, null);
            holder = new ViewHolder();

            holder.apkName = (TextView) convertView
                    .findViewById(R.id.appname);
            holder.ck1 = (CheckBox) convertView
                    .findViewById(R.id.checkBox1);

            convertView.setTag(holder);
             //holder.ck1.setTag(packageList.get(position));

        } else {

            holder = (ViewHolder) convertView.getTag();
        }
        // ViewHolder holder = (ViewHolder) convertView.getTag();
        PackageInfo packageInfo = (PackageInfo) getItem(position);



        Drawable appIcon = packageManager
                .getApplicationIcon(packageInfo.applicationInfo);




        String appName = packageManager.getApplicationLabel(
                packageInfo.applicationInfo).toString();
        appIcon.setBounds(0, 0, 75, 75);
        holder.apkName.setCompoundDrawables(appIcon, null, null, null);
        holder.apkName.setCompoundDrawablePadding(15);
        holder.apkName.setText(appName);
        holder.ck1.setChecked(false);

        if (itemChecked[position])
            holder.ck1.setChecked(true);
        else
            holder.ck1.setChecked(false);

        holder.ck1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (holder.ck1.isChecked())
                    itemChecked[position] = true;
                else
                    itemChecked[position] = false;
            }
        });

        return convertView;

    }




}

我将如何实现这一目标？

Answer 1

所以你正在做的是，你正在使用包管理器填充已安装应用程序的列表视图。添加加号按钮代替复选框。现在获得与此类似的安装应用程序 -

    List<PackageInfo> packageList1 = packageManager.getInstalledPackages(0);

    final PackageItemInfo.DisplayNameComparator comparator = new PackageItemInfo.DisplayNameComparator(packageManager);

    Collections.sort(packageList1, new Comparator<PackageInfo>() {
        @Override
        public int compare(PackageInfo lhs, PackageInfo rhs) {
            return comparator.compare(lhs.applicationInfo, rhs.applicationInfo);
        }
    });

    for (int i = 0; i < packageList1.size(); i++) {

        PackageInfo PackInfo = packageList1.get(i);
        if (((PackInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) != true) {

            //Add to adapter
        }
    }
}

现在，在包含选项卡的活动中创建一个公共字符串数组。单击加号按钮时，将包名称添加到数组中。

现在在另一个选项卡上使用相同的适配器，但在此之前将其添加到适配器检查是否在使用索引的字符串数组中找到它。像 -

这样的东西

List<PackageInfo> packageList1 = packageManager.getInstalledPackages(0);

final PackageItemInfo.DisplayNameComparator comparator = new PackageItemInfo.DisplayNameComparator(packageManager);

Collections.sort(packageList1, new Comparator<PackageInfo>() {
    @Override
    public int compare(PackageInfo lhs, PackageInfo rhs) {
        return comparator.compare(lhs.applicationInfo, rhs.applicationInfo);
    }
});

for (int i = 0; i < packageList1.size(); i++) {

    PackageInfo PackInfo = packageList1.get(i);
    if (((PackInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) != true) {
    if (Mainactivity.array contains String PackageName= PackInfo.packageName)
    {
                //Add to adapter
    }
            }
}
    }

要保留所选应用，请将其包名称添加到shared_preferences。

编辑：

在片段的LoadApplications类中，您可以检索已安装的应用列表。在第二个片段上使用相同的代码，但只添加一个条件

    for(PackageInfo pi : packageList) {
            boolean b = isSystemPackage(pi);
            boolean c = isSystemPackage1(pi);

            if(!b || !c ) {

    if (array contains packagename){
    packageList1.add(pi);
            }
        }

Answer 2

List<UserApps> packageListBlocked = new ArrayList<UserApps>();
holder.ck1.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        if (holder.ck1.isChecked())
            itemChecked[position] = true;
            packageListBlocked.add(packageList.get(position));
        else
            itemChecked[position] = false;
    }
});

ArrayList可以保存重复数据，因此在添加时要小心。

现在您已将packageListBlocked中的所有checkedItem传递到下一个标签并设置数据，请务必致电adapter.notifyDataSetChanged();

如何将listview项添加到整个其他列表视图

2 个答案: