Launcher 添加Google Search
Launch原生态Search会根据相应的App注册情况打开、显示图标
引用代码如下：
private void updateGlobalIcons() {
boolean searchVisible = false;
boolean voiceVisible = false;
// If we have a saved version of these external icons, we load them up
// immediately
int coi = getCurrentOrientationIndexForGlobalIcons();
// if (sGlobalSearchIcon[coi] == null || sVoiceSearchIcon[coi] == null)
// {
searchVisible = updateGlobalSearchIcon();
voiceVisible = updateVoiceSearchIcon(searchVisible);
// }
if (sGlobalSearchIcon[coi] != null) {
updateGlobalSearchIcon(sGlobalSearchIcon[coi]);
searchVisible = true;
}
if (sVoiceSearchIcon[coi] != null) {
updateVoiceSearchIcon(sVoiceSearchIcon[coi]);
voiceVisible = true;
}
}
protected void updateGlobalSearchIcon(Drawable.ConstantState d) {
final View searchButtonContainer = findViewById(R.id.search_button_container);
final View searchButton = (ImageView) findViewById(R.id.search_button);
updateButtonWithDrawable(R.id.search_button, d);
invalidatePressedFocusedStates(searchButtonContainer, searchButton);
}
protected void updateVoiceSearchIcon(Drawable.ConstantState d) {
final View voiceButtonContainer = findViewById(R.id.voice_button_container);
final View voiceButton = findViewById(R.id.voice_button);
updateButtonWithDrawable(R.id.voice_button, d);
invalidatePressedFocusedStates(voiceButtonContainer, voiceButton);
}
private void invalidatePressedFocusedStates(View container, View button) {
if (container instanceof HolographicLinearLayout) {
HolographicLinearLayout layout = (HolographicLinearLayout) container;
layout.invalidatePressedFocusedStates();
} else if (button instanceof HolographicImageView) {
HolographicImageView view = (HolographicImageView) button;
view.invalidatePressedFocusedStates();
}
}
private void updateButtonWithDrawable(int buttonId, Drawable.ConstantState d) {
ImageView button = (ImageView) findViewById(buttonId);
button.setImageDrawable(d.newDrawable(getResources()));
}
@Override
public boolean onSearchRequested() {
startSearch(null, false, null, true);
// Use a custom animation for launching search
return true;
}
/**
* Indicates that we want global search for this activity by setting the
* globalSearch argument for {@link #startSearch} to true.
*/
@Override
public void startSearch(String initialQuery, boolean selectInitialQuery, Bundle appSearchData, boolean globalSearch) {
if (appSearchData == null) {
appSearchData = new Bundle();
appSearchData.putString("source", "launcher-search");
}
Rect sourceBounds = new Rect();
startSearch(initialQuery, selectInitialQuery, appSearchData, sourceBounds);
}
public void startSearch(String initialQuery, boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
startGlobalSearch(initialQuery, selectInitialQuery, appSearchData, sourceBounds);
}
/**
* Starts the global search activity. This code is a copied from SearchManager
*/
@SuppressLint("NewApi")
private void startGlobalSearch(String initialQuery,
boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
final SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
ComponentName globalSearchActivity = searchManager.getGlobalSearchActivity();
if (globalSearchActivity == null) {
Log.w(TAG, "No global search activity found.");
return;
}
Intent intent = new Intent(SearchManager.INTENT_ACTION_GLOBAL_SEARCH);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setComponent(globalSearchActivity);
// Make sure that we have a Bundle to put source in
if (appSearchData == null) {
appSearchData = new Bundle();
} else {
appSearchData = new Bundle(appSearchData);
}
// Set source to package name of app that starts global search, if not set already.
if (!appSearchData.containsKey("source")) {
appSearchData.putString("source", getPackageName());
}
intent.putExtra(SearchManager.APP_DATA, appSearchData);
if (!TextUtils.isEmpty(initialQuery)) {
intent.putExtra(SearchManager.QUERY, initialQuery);
}
if (selectInitialQuery) {
intent.putExtra(SearchManager.EXTRA_SELECT_QUERY, selectInitialQuery);
}
intent.setSourceBounds(sourceBounds);
try {
startActivity(intent);
} catch (ActivityNotFoundException ex) {
Log.e(TAG, "Global search activity not found: " + globalSearchActivity);
}
}
/**
* Event handler for the search button
*
* @param v
* The view that was clicked.
*/
public void onClickSearchButton(View v) {
v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
//startApk("com.google.android.googlequicksearchbox");
onSearchRequested();
}
/**
* Event handler for the voice button
*
* @param v
* The view that was clicked.
*/
public void onClickVoiceButton(View v) {
v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
startVoiceSearch();
}
@SuppressLint("NewApi")
protected boolean updateGlobalSearchIcon() {
final View searchButtonContainer = findViewById(R.id.search_button_container);
final ImageView searchButton = (ImageView) findViewById(R.id.search_button);
final View voiceButtonContainer = findViewById(R.id.voice_button_container);
final View voiceButton = findViewById(R.id.voice_button);
final SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
ComponentName activityName = searchManager.getGlobalSearchActivity();
if (activityName != null) {
int coi = getCurrentOrientationIndexForGlobalIcons();
sGlobalSearchIcon[coi] = updateButtonWithIconFromExternalActivity(R.id.search_button, activityName, R.drawable.ic_widget_qsb_google, TOOLBAR_SEARCH_ICON_METADATA_NAME);
if (sGlobalSearchIcon[coi] == null) {
sGlobalSearchIcon[coi] = updateButtonWithIconFromExternalActivity(R.id.search_button, activityName, R.drawable.ic_widget_qsb_google, TOOLBAR_ICON_METADATA_NAME);
}
if (searchButtonContainer != null)
searchButtonContainer.setVisibility(View.VISIBLE);
searchButton.setVisibility(View.VISIBLE);
invalidatePressedFocusedStates(searchButtonContainer, searchButton);
return true;
} else {
if (searchButtonContainer != null)
searchButtonContainer.setVisibility(View.GONE);
if (voiceButtonContainer != null)
voiceButtonContainer.setVisibility(View.GONE);
if (searchButton != null)
searchButton.setVisibility(View.GONE);
if (voiceButton != null)
voiceButton.setVisibility(View.GONE);
return false;
}
}
@SuppressLint("NewApi")
protected boolean updateVoiceSearchIcon(boolean