这是我在 github 上找到的代码的一部分，这是在单击时生成带有选项的所有用户应用程序列表的列表视图。它只是一个带有应用程序名称的简单列表。应用程序名称已被加载，我想问的是如何加载应用程序特定图标及其名称？所以它的显示如下：
[ICON] App name
[ICON2] App name 2
public class appcontrol extends Activity implements ServiceConnection {
public static final boolean DEBUG = true;
static final String MARKET = "Market";
public static final DecimalFormat decimal = new DecimalFormat("0.0");
private ToggleButton activeBox;
private boolean active;
private Messenger messenger = null;
private SharedPreferences options;
private NotificationManager notificationManager;
private boolean getOut = false;
public ListView appsList;
static final int NOTIFICATION_ID = 1;
public static Setting[] getSettings(Context context, SharedPreferences pref) {
Setting[] allSettings = new Setting[]{
new FontSize(context, pref),
new OrientationSetting(context, pref),
new TimeoutSetting(context, pref),
new BoostSetting(context, pref),
new MinCPUSetting(context, pref),
new MaxCPUSetting(context, pref)
};
int count = 0;
for (int i=0; i<allSettings.length; i++)
if (allSettings[i].isActive())
count++;
Setting[] settings = new Setting[count];
count = 0;
for (int i=0; i<allSettings.length; i++) {
if (allSettings[i].isActive())
settings[count++] = allSettings[i];
}
log(""+count+" settings active");
return settings;
}
public static void log(String s) {
if (DEBUG)
Log.v("appcontrol", s);
}
private void message(String title, String msg) {
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle(title);
alertDialog.setMessage(Html.fromHtml(msg));
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE,
getResources().getText(R.string.ok),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {} });
alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface dialog) {} });
alertDialog.show();
}
private void firstTime() {
if (! options.getBoolean(Options.PREF_FIRST_TIME, true))
return;
SharedPreferences.Editor ed = options.edit();
ed.putBoolean(Options.PREF_FIRST_TIME, false);
ed.commit();
String msg;
msg = "With appcontrol, you can have some different settings in different applications";
message("Welcome", msg);
}
public void helpButton(View v) {
help();
}
private void saveOS() {
}
private void restoreOS() {
}
void stopService() {
log("stop service");
stopService(new Intent(this, appcontrolService.class));
restoreOS();
}
void saveSettings() {
}
void bind() {
log("bind");
Intent i = new Intent(this, appcontrolService.class);
bindService(i, this, 0);
}
void restartService(boolean bind) {
stopService();
saveSettings();
Intent i = new Intent(this, appcontrolService.class);
log("restartService:starting service");
startService(i);
if (bind) {
bind();
}
}
void setActive(boolean value, boolean bind) {
SharedPreferences.Editor ed = options.edit();
ed.putBoolean(Options.PREF_ACTIVE, value);
ed.commit();
if (value) {
log("setActive:restartService");
restartService(bind);
}
else {
stopService();
}
active = value;
updateNotification();
}
public void PleaseBuy(String title, String text, final boolean exit) {
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle(title);
alertDialog.setMessage(Html.fromHtml(text));
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE,
"Go to "+MARKET,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
market();
if (exit) {
stopService();
finish();
}
} });
alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE,
"Not now",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (exit) {
stopService();
finish();
}
} });
alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (exit)
finish();
}
});
alertDialog.show();
}
private void market() {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (MARKET.contains("Appstore")) {
// string split up to fool switcher.sh
i.setData(Uri.parse("http://www.amazon.com/gp/mas/dl/android?p=com.23list.Screen" +"Dim."+"Full"));
}
else if (MARKET.contains("AndroidPIT")) {
// string split up to fool switcher.sh
i.setData(Uri.parse("http://www.androidpit.com/en/android/market/apps/app/com.23list.Screen" +"Dim."+"Full"));
}
else {
// string split up to fool switcher.sh
i.setData(Uri.parse("market://details?id=com.23list.Screen" +"Dim."+"Full"));
}
startActivity(i);
}
private void changeLog() {
message("Changes", getAssetFile("changelog.html"));
}
private void help() {
message("Questions and Answers", getAssetFile(isKindle()?"kindlehelp.html":"help.html"));
}
private void versionUpdate() {
int versionCode;
try {
versionCode = getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
} catch (NameNotFoundException e) {
versionCode = 0;
}
if (options.getInt(Options.PREF_LAST_VERSION, 0) != versionCode) {
options.edit().putInt(Options.PREF_LAST_VERSION, versionCode).commit();
changeLog();
}
}
private void chooseSetting(final String app) {
final Setting[] settings = getSettings(this, options);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final AlertDialog dialog;
// builder.setTitle("Choose setting");
View v = View.inflate(this, R.layout.choose_setting, null);
ListView list = (ListView)v.findViewById(R.id.settings);
list.setAdapter(new ArrayAdapter<Setting>(this,android.R.layout.simple_list_item_2,
settings) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v;
if (convertView == null) {
v = View.inflate(appcontrol.this, android.R.layout.simple_list_item_2, null);
}
else {
v = convertView;
}
((TextView)v.findViewById(android.R.id.text1))
.setText(settings[position].getName());
((TextView)v.findViewById(android.R.id.text2))
.setText(settings[position].describe(app));
return v;
}
});
builder.setView(v);
dialog = builder.create();
dialog.show();
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position,
long id) {
log("chose "+settings[position].name);
settings[position].dialog(appcontrol.this, app);
dialog.dismiss();
}
});
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
log("onCreate");
options = PreferenceManager.getDefaultSharedPreferences(this);
versionUpdate();
firstTime();
setContentView(R.layout.main);
notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
active = options.getBoolean(Options.PREF_ACTIVE, false);
// if (active) {
// restartService(true);
// }
// else {
// stopService();
// }
activeBox = (ToggleButton)findViewById(R.id.active);
activeBox.setChecked(active);
activeBox.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton button, boolean value) {
if (value && !active) {
saveOS();
}
setActive(value, true);
if (value) {
message("Important information",
"If you wish to uninstall or upgrade appcontrol, uncheck the 'Active' "+
"button before uninstalling or upgrading, or some system resources "+
"will be wasted (they can be reclaimed by rebooting your device).");
}
}});
appsList = (ListView)findViewById(R.id.apps);
appsList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position,
long id) {
MyApplicationInfo info = (MyApplicationInfo) appsList.getAdapter().getItem(position);
chooseSetting(info.packageName);
}
});
}
public void setNotification(Context c, NotificationManager nm, boolean active) {
int icon = active?R.drawable.brightnesson:R.drawable.brightnessoff;
if (Options.getNotify(options) == Options.NOTIFY_NEVER)
icon = 0;
Notification n = new Notification(
icon,
"appcontrol",
System.currentTimeMillis());
Intent i = new Intent(c, appcontrol.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
n.flags = Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT;
n.setLatestEventInfo(c, "appcontrol", "appcontrol is "+(active?"on":"off"),
PendingIntent.getActivity(c, 0, i, 0));
nm.notify(NOTIFICATION_ID, n);
log("notify "+n.toString());
}
private void updateNotification() {
updateNotification(this, options, notificationManager, active);
}
public void updateNotification(Context c,
SharedPreferences options, NotificationManager nm, boolean active) {
log("notify "+Options.getNotify(options));
switch(Options.getNotify(options)) {
case Options.NOTIFY_AUTO:
if (active)
setNotification(c, nm, active);
else {
log("trying to cancel notification");
nm.cancelAll();
}
break;
case Options.NOTIFY_NEVER:
case Options.NOTIFY_ALWAYS:
setNotification(c, nm, active);
break;
}
}
@Override
public void onResume() {
super.onResume();
updateNotification();
if (getOut) {
log("getting out");
return;
}
(new GetApps(this, appsList, getSettings(this, options))).execute();
if (active) {
restartService(true);
}
else {
stopService();
}
}
@Override
public void onPause() {
super.onPause();
if (getOut)
return;
saveSettings();
if (messenger != null) {
log("unbind");
unbindService(this);
}
}
@Override
public void onStop() {
super.onStop();
log("onStop");
}
@Override
public void onDestroy() {
super.onDestroy();
log("onDestroy");
}
private boolean largeScreen() {
int layout = getResources().getConfiguration().screenLayout;
return (layout & Configuration.SCREENLAYOUT_SIZE_MASK) ==
Configuration.SCREENLAYOUT_SIZE_LARGE;
}
private boolean isKindle() {
return Build.MODEL.equalsIgnoreCase("Kindle Fire");
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (KeyEvent.KEYCODE_MENU == keyCode) {
onWhatToControl(null);
return true;
}
return super.onKeyUp(keyCode, event);
}
public void onWhatToControl(View v) {
startActivity(new Intent(this, Options.class));
}
public void onOptions(View v) {
startActivity(new Intent(this, Options2.class));
}
public void onOtherApps(View v) {
MarketDetector.launch(this);
}
public void sendMessage(int n, int arg1, int arg2) {
if (messenger == null)
return;
try {
log("message "+n+" "+arg1+" "+arg2);
messenger.send(Message.obtain(null, n, arg1, arg2));
} catch (RemoteException e) {
}
}
@Override
public void onServiceConnected(ComponentName classname, IBinder service) {
log("connected");
messenger = new Messenger(service);
try {
messenger.send(Message.obtain(null, IncomingHandler.MSG_RELOAD_SETTINGS, 0, 0));
} catch (RemoteException e) {
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
log("disconnected");
// stopService(new Intent(this, appcontrolService.class));
messenger = null;
}
static private String getStreamFile(InputStream stream) {
BufferedReader reader;
try {
reader = new BufferedReader(new InputStreamReader(stream));
String text = "";
String line;
while (null != (line=reader.readLine()))
text = text + line;
return text;
} catch (IOException e) {
// TODO Auto-generated catch block
return "";
}
}
public String getAssetFile(String assetName) {
try {
return getStreamFile(getAssets().open(assetName));
} catch (IOException e) {
// TODO Auto-generated catch block
return "";
}
}
}