FileDocCategorySizeDatePackage
AppWidgetPickActivity.javaAPI DocAndroid 1.5 API9018Wed May 06 22:42:48 BST 2009com.android.settings

AppWidgetPickActivity

public class AppWidgetPickActivity extends ActivityPicker
Displays a list of {@link AppWidgetProviderInfo} widgets, along with any injected special widgets specified through {@link AppWidgetManager#EXTRA_CUSTOM_INFO} and {@link AppWidgetManager#EXTRA_CUSTOM_EXTRAS}.

When an installed {@link AppWidgetProviderInfo} is selected, this activity will bind it to the given {@link AppWidgetManager#EXTRA_APPWIDGET_ID}, otherwise it will return the requested extras.

Fields Summary
private static final String
TAG
private static final boolean
LOGD
private android.content.pm.PackageManager
mPackageManager
private android.appwidget.AppWidgetManager
mAppWidgetManager
private int
mAppWidgetId
The allocated {@link AppWidgetManager#EXTRA_APPWIDGET_ID} that this activity is binding.
Constructors Summary
Methods Summary
protected java.util.ListgetItems()
Build and return list of items to be shown in dialog. This will mix both installed {@link AppWidgetProviderInfo} and those provided through {@link AppWidgetManager#EXTRA_CUSTOM_INFO}, sorting them alphabetically.

        List<PickAdapter.Item> items = new ArrayList<PickAdapter.Item>();
        
        putInstalledAppWidgets(items);
        putCustomAppWidgets(items);
        
        // Sort all items together by label
        Collections.sort(items, new Comparator<PickAdapter.Item>() {
                Collator mCollator = Collator.getInstance();
                public int compare(PickAdapter.Item lhs, PickAdapter.Item rhs) {
                    return mCollator.compare(lhs.label, rhs.label);
                }
            });

        return items;
public voidonClick(android.content.DialogInterface dialog, int which)
{@inheritDoc}

        Intent intent = getIntentForPosition(which);
        
        int result;
        if (intent.getExtras() != null) {
            // If there are any extras, it's because this entry is custom.
            // Don't try to bind it, just pass it back to the app.
            setResultData(RESULT_OK, intent);
        } else {
            try {
                mAppWidgetManager.bindAppWidgetId(mAppWidgetId, intent.getComponent());
                result = RESULT_OK;
            } catch (IllegalArgumentException e) {
                // This is thrown if they're already bound, or otherwise somehow
                // bogus.  Set the result to canceled, and exit.  The app *should*
                // clean up at this point.  We could pass the error along, but
                // it's not clear that that's useful -- the widget will simply not
                // appear.
                result = RESULT_CANCELED;
            }
            setResultData(result, null);
        }
        finish();
public voidonCreate(android.os.Bundle icicle)

    
    
        
        mPackageManager = getPackageManager();
        mAppWidgetManager = AppWidgetManager.getInstance(this);
        
        super.onCreate(icicle);
        
        // Set default return data
        setResultData(RESULT_CANCELED, null);
        
        // Read the appWidgetId passed our direction, otherwise bail if not found
        final Intent intent = getIntent();
        if (intent.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
            mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
        } else {
            finish();
        }
voidputAppWidgetItems(java.util.List appWidgets, java.util.List customExtras, java.util.List items)
Create list entries for the given {@link AppWidgetProviderInfo} widgets, inserting extras if provided.

        final int size = appWidgets.size();
        for (int i = 0; i < size; i++) {
            AppWidgetProviderInfo info = appWidgets.get(i);
            
            CharSequence label = info.label;
            Drawable icon = null;

            if (info.icon != 0) {
                icon = mPackageManager.getDrawable(info.provider.getPackageName(), info.icon, null);
                if (icon == null) {
                    Log.w(TAG, "Can't load icon drawable 0x" + Integer.toHexString(info.icon)
                            + " for provider: " + info.provider);
                }
            }
            
            PickAdapter.Item item = new PickAdapter.Item(this, label, icon);
            
            item.packageName = info.provider.getPackageName();
            item.className = info.provider.getClassName();
            
            if (customExtras != null) {
                item.extras = customExtras.get(i);
            }
            
            items.add(item);
        }
voidputCustomAppWidgets(java.util.List items)
Create list entries for any custom widgets requested through {@link AppWidgetManager#EXTRA_CUSTOM_INFO}.

        final Bundle extras = getIntent().getExtras();
        
        // get and validate the extras they gave us
        ArrayList<AppWidgetProviderInfo> customInfo = null;
        ArrayList<Bundle> customExtras = null;
        try_custom_items: {
            customInfo = extras.getParcelableArrayList(AppWidgetManager.EXTRA_CUSTOM_INFO);
            if (customInfo == null || customInfo.size() == 0) {
                Log.i(TAG, "EXTRA_CUSTOM_INFO not present.");
                break try_custom_items;
            }

            int customInfoSize = customInfo.size();
            for (int i=0; i<customInfoSize; i++) {
                Parcelable p = customInfo.get(i);
                if (p == null || !(p instanceof AppWidgetProviderInfo)) {
                    customInfo = null;
                    Log.e(TAG, "error using EXTRA_CUSTOM_INFO index=" + i);
                    break try_custom_items;
                }
            }

            customExtras = extras.getParcelableArrayList(AppWidgetManager.EXTRA_CUSTOM_EXTRAS);
            if (customExtras == null) {
                customInfo = null;
                Log.e(TAG, "EXTRA_CUSTOM_INFO without EXTRA_CUSTOM_EXTRAS");
                break try_custom_items;
            }

            int customExtrasSize = customExtras.size();
            if (customInfoSize != customExtrasSize) {
                Log.e(TAG, "list size mismatch: EXTRA_CUSTOM_INFO: " + customInfoSize
                        + " EXTRA_CUSTOM_EXTRAS: " + customExtrasSize);
                break try_custom_items;
            }


            for (int i=0; i<customExtrasSize; i++) {
                Parcelable p = customExtras.get(i);
                if (p == null || !(p instanceof Bundle)) {
                    customInfo = null;
                    customExtras = null;
                    Log.e(TAG, "error using EXTRA_CUSTOM_EXTRAS index=" + i);
                    break try_custom_items;
                }
            }
        }

        if (LOGD) Log.d(TAG, "Using " + customInfo.size() + " custom items");
        putAppWidgetItems(customInfo, customExtras, items);
voidputInstalledAppWidgets(java.util.List items)
Create list entries for installed {@link AppWidgetProviderInfo} widgets.

        List<AppWidgetProviderInfo> installed = mAppWidgetManager.getInstalledProviders();
        putAppWidgetItems(installed, null, items);
voidsetResultData(int code, android.content.Intent intent)
Convenience method for setting the result code and intent. This method correctly injects the {@link AppWidgetManager#EXTRA_APPWIDGET_ID} that most hosts expect returned.

        Intent result = intent != null ? intent : new Intent();
        result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
        setResult(code, result);