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我正在使用SearchView，我已添加搜索功能（工作），現在我試圖添加自定義建議。提供程序被創建，但是當我鍵入某些查詢（）從來沒有因爲某些原因而被調用。無法顯示我的自定義建議使用SearchView
我在哪裏錯了？
這裏我的清單：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.chefme.chefme">
<uses-feature
android:name="android.hardware.sensor.accelerometer"
android:required="true" />
<uses-feature
android:name="android.permission-group.MICROPHONE"
android:required="true"/>
<uses-feature android:name="android.hardware.camera"
android:required="true" />
<!-- <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="18" />-->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<provider
android:name=".RecipeIngredientTabs.SuggestionProvider"
android:authorities="com.chefme.chefme.RecipeIngredientTabs.SuggestionProvider">
</provider>
<activity
android:name=".Startup"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".RecipeIngredientTabs.Main"
android:label="@string/app_name"
android:launchMode="singleTop"
android:theme="@style/AppTheme.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable"/>
</activity>
<activity
android:name=".RecipeStep"
android:label="@string/title_activity_recipe_steps"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".RecipePreview.RecipePreview"
android:label="@string/title_activity_recipe_preview"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".ShoppingList.ShoppingList"
android:label="@string/title_activity_shopping_list"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".Settings.Diets"
android:label="@string/title_activity_diets"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar"/>
<activity
android:name=".Favorite.FavoriteActivity"
android:label="@string/title_activity_favorite"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar"/>
<activity
android:name=".ownRecipesCamera.TakePicture"
android:label="@string/title_activity_take_picture"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar"/>
<activity
android:name=".Settings.Credits"
android:label="@string/title_activity_credits"
android:launchMode="singleInstance"
android:theme="@style/AppTheme.NoActionBar"/>
</application>
</manifest>
這裏我提供：
package com.chefme.chefme.RecipeIngredientTabs;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.support.annotation.Nullable;
import DBUtility.Data;
public class SuggestionProvider extends ContentProvider{
@Override
public boolean onCreate() {
System.out.println("Creation Provider");
return true;
}
@Nullable
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
String query = uri.getLastPathSegment().toLowerCase(); //Dovrebbe essere chiamato tramite searchable.xml
System.out.println("write: "+ query);
String[] columns = new String[]{"_ID", "SUGGEST_COLUMN_TEXT_1", "SUGGEST_COLUMN_ICON_1", "SUGGEST_COLUMN_INTENT_DATA"};
MatrixCursor cursor = new MatrixCursor(columns);
Object[] row = new Object[]{0, Data.currentIngredients.get(0).getName(), Data.currentIngredients.get(0).getImage(), "Gigi"};
cursor.addRow(row);
return cursor;
}
@Nullable
@Override
public String getType(Uri uri) {
return null;
}
@Nullable
@Override
public Uri insert(Uri uri, ContentValues contentValues) {
return null;
}
@Override
public int delete(Uri uri, String s, String[] strings) {
return 0;
}
@Override
public int update(Uri uri, ContentValues contentValues, String s, String[] strings) {
return 0;
}
}
這裏我searchable.xml：
這裏我主要的：
package com.chefme.chefme.RecipeIngredientTabs;
import android.Manifest;
import android.app.Activity;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
import android.support.design.widget.TabLayout;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.design.widget.NavigationView;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import com.chefme.chefme.NavbarActivity;
import com.chefme.chefme.R;
import java.io.File;
import DBUtility.Data;
public class Main extends NavbarActivity {
private SectionsPagerAdapter selectorPagerAdapter;
private ViewPager mViewPager;
private TabLayout tabLayout;
private Toast backtoast;
// Storage Permissions
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.replaceContentLayout(R.layout.main_content, super.CONTENT_LAYOUT_ID);
verifyDirectoryExists();
verifyStoragePermissions(this);
handleIntent(getIntent());
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, //host activity
drawer, //drawerLayout object
toolbar, //nav drawer icon to replace
R.string.navigation_drawer_open,
R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
selectorPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(selectorPagerAdapter);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
}
@Override
protected void onResume(){
super.onResume();
Data.active_main = true;
}
@Override
protected void onPause(){
super.onPause();
Data.active_main = false;
}
public void onBackPressed() {
if(backtoast!=null&&backtoast.getView().getWindowToken()!=null) {
finish();
} else {
backtoast = Toast.makeText(this, "Press back to exit", Toast.LENGTH_SHORT);
backtoast.show();
}
}
@Override
protected void onNewIntent(Intent intent) {
setIntent(intent);
handleIntent(intent);
}
private void handleIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
System.out.println("Searched: " + query);
}
else if (Intent.ACTION_VIEW.equals(intent.getAction())) { //Intent partito da SuggestionProvider
String query = intent.getDataString();
System.out.println("Suggested: " + query);
}
}
//------------------------------------------------------------------------------------------
// TAB SELECTOR FUNCTIONS
//------------------------------------------------------------------------------------------
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
if(position == 0)
return new TabFragmentIngredients();
if(position == 1)
return new TabFragmentRecipes();
else
return null;
}
@Override
public int getCount() {
// Show 2 total pages.
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.name_ingredients_hint);
case 1:
return getString(R.string.name_recipes_hint);
}
return null;
}
}
//------------------------------------------------------------------------------------------
// MENU FUNCTIONS
//------------------------------------------------------------------------------------------
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
// Get the SearchView and set the searchable configuration
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
// Assumes current activity is the searchable activity
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
searchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_settings: showOrderbyDialog();
return true;
}
return super.onOptionsItemSelected(item);
}
private void showOrderbyDialog() {
FragmentManager fm = getSupportFragmentManager();
OrderByDialog orderbyDialogDialog = new OrderByDialog();
orderbyDialogDialog.show(fm, "");
}
public static void verifyDirectoryExists(){
String folder_main = "GnammyRecipes";
File f = new File(Environment.getExternalStorageDirectory()+"/Pictures/", folder_main);
if (!f.exists()) {
f.mkdirs();
}
}
public static void verifyStoragePermissions(Activity activity) {
// Check if we have write permission
int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (permission != PackageManager.PERMISSION_GRANTED) {
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(
activity,
PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE
);
}
}
}
我試過了，沒有改變。我已經一步一步地跟蹤了這個指南，看起來一切都是正確的。 – Marco
它會在日誌中拋出任何錯誤嗎？請在您的搜索活動類中添加調試點以查看它是否達到tr –
我得到的唯一錯誤是：「08-25 12：30：21.786 2264-2264/com.chefme.chefme E/SpannableStringBuilder：SPAN_EXCLUSIVE_EXCLUSIVE跨度不能有零長度「，但我不認爲與此有關，你認爲如何？ – Marco