MainActivity，
public class MainActivity extends ListActivity {
int count;
private PackageManager packageManager = null;
private List<ApplicationInfo> applist = null;
private ApplicationAdapter listadaptor = null;
ListView list;
private ArrayList results;
String str = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list=(ListView) findViewById(android.R.id.list);
packageManager = getPackageManager();
new LoadApplications().execute();
Intent service = new Intent(MainActivity.this,MyService.class);
startService(service);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
ApplicationInfo app = applist.get(position);
try {
Intent intent = packageManager
.getLaunchIntentForPackage(app.packageName);
if (null != intent) {
startActivity(intent);
}
} catch (ActivityNotFoundException e) {
Toast.makeText(MainActivity.this, e.getMessage(),
Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(MainActivity.this, e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();
int i=0;
for (ApplicationInfo info : list) {
try {
if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {
applist.add(info);
}
} catch (Exception e) {
e.printStackTrace();
}
i++;
}
return applist;
}
private class LoadApplications extends AsyncTask<Void, Void, Void> {
private ProgressDialog progress = null;
@Override
protected Void doInBackground(Void... params) {
applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
listadaptor = new ApplicationAdapter(MainActivity.this,R.layout.snippet_list_row, applist);
return null;
}
@Override
protected void onCancelled() {
super.onCancelled();
}
@Override
protected void onPostExecute(Void result) {
setListAdapter(listadaptor);
progress.dismiss();
super.onPostExecute(result);
}
@Override
protected void onPreExecute() {
progress = ProgressDialog.show(MainActivity.this, null,
"Loading application info...");
super.onPreExecute();
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
}
}
ApplicationAdapter，
public class ApplicationAdapter extends ArrayAdapter<ApplicationInfo> implements CompoundButton.OnCheckedChangeListener {
private List<ApplicationInfo> appsList = null;
private Context context;
private PackageManager packageManager;
SparseBooleanArray mCheckStates;
CheckBox chkSelect;
SharedPreferences.Editor editor;
ApplicationInfo applicationInfo;
int count;
String Pname;
AppInfoHolder holder;
public ApplicationAdapter(Context context, int textViewResourceId,
List<ApplicationInfo> appsList) {
super(context, textViewResourceId, appsList);
this.context = context;
this.appsList = appsList;
packageManager = context.getPackageManager();
mCheckStates = new SparseBooleanArray();
count=appsList.size();
}
@Override
public int getCount() {
return ((null != appsList) ? appsList.size() : 0);
}
@Override
public ApplicationInfo getItem(int position) {
return ((null != appsList) ? appsList.get(position) : null);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
SharedPreferences sharedPrefs = context.getSharedPreferences("shared",Context.MODE_PRIVATE);
editor = sharedPrefs.edit();
View view = convertView;
holder=null;
if (null == view) {
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.snippet_list_row, null);
holder=new AppInfoHolder();
holder.chkSelect = (CheckBox) view.findViewById(R.id.checkbox);
holder.appName = (TextView) view.findViewById(R.id.app_name);
holder.packageName = (TextView) view.findViewById(R.id.app_paackage);
holder.iconview = (ImageView) view.findViewById(R.id.app_icon);
view.setTag(holder);
}else{
holder=(AppInfoHolder)view.getTag();
}
applicationInfo = appsList.get(position);
if (null != applicationInfo) {
holder.appName.setText(applicationInfo.loadLabel(packageManager));
holder.packageName.setText(applicationInfo.packageName); holder.iconview.setImageDrawable(applicationInfo.loadIcon(packageManager));
}
Collections.sort(appsList, new ApplicationInfo.DisplayNameComparator(packageManager));
holder.chkSelect.setTag(position);
holder.chkSelect.setChecked(sharedPrefs.getBoolean("CheckValue" + position, false));
holder.chkSelect.setOnCheckedChangeListener(this);
return view;
}
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
//save the checkbox values (true or false)
editor.putBoolean("CheckValue" + buttonView.getTag(), isChecked);
//total number of items in the list
editor.putInt("count",count);
editor.commit();
}
static class AppInfoHolder{
CheckBox chkSelect;
TextView appName;
TextView packageName;
ImageView iconview;
}
}
在应用程序适配器中（在onCheckedChanged中）我可以保存复选框值（true或false）以及列表视图中项目的总数（已安装应用程序总数的计数）。以同样的方式我想保存所有应用程序的包装名称。我所做的就是使用以下两种方法中的任何一种，
这两个只保存一些软件包名称或什么也不保存。请帮我保存所有软件包名称。
注意：位置和buttonView.getTag（）值为0,1,2，...等
答案 0 :(得分：0)
我在主要活动中更改了这个，现在我得到了所有的包名，没有任何问题。
private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list) {
ArrayList<ApplicationInfo> applist = new ArrayList<ApplicationInfo>();
i=0;
for (ApplicationInfo info : list) {
try {
if (null != packageManager.getLaunchIntentForPackage(info.packageName)) {
applist.add(info);
//str=info.loadIcon(packageManager).toString();
editor.putString("name" + i, info.processName.toString());
// results.add(info.loadLabel(packageManager).toString());
i++;
}
} catch (Exception e) {
e.printStackTrace();
}
}
editor.commit();
return applist;
}