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Android - 如何從我的拼寫檢查服務獲取會話?

[英]Android - How to get a Session from my Spell Checker Service?

我正在嘗試實現這里描述的拼寫檢查服務稱為SampleSpellCheckerService但似乎教程不完整,並且它的源代碼似乎不可用。

我正在努力解決如何在我的活動的setSuggestionsFor()方法中從我的拼寫檢查服務獲取會話,如下所示:

public class SpellCheckerSettingsActivity extends AppCompatActivity implements SpellCheckerSession.SpellCheckerSessionListener {

    private static final String LOG_TAG = SpellCheckerSettingsActivity.class.getSimpleName();

    private TextView textView = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_spell_checker_settings);

        final EditText editText = (EditText)findViewById(R.id.editText);

        textView = (TextView)findViewById(R.id.textView);

        Button button = (Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                fetchSuggestionsFor(editText.getText().toString());
            }
        });

        startService(new Intent(this, SampleSpellCheckerService.class));

    }

    private void fetchSuggestionsFor(String input){

        Log.d(LOG_TAG, "fetchSuggestionsFor(\"" + input + "\")");

        /***************************************************
         * 
         * This line is invalid. What do I replace it with?
         * 
         ***************************************************/
        SpellCheckerSession session = SampleSpellCheckerService.getSession();

        TextInfo[] textInfos = new TextInfo[]{ new TextInfo(input) };
        int suggestionsLimit = 5;
        session.getSentenceSuggestions(textInfos, suggestionsLimit);

    }

    @Override
    public void onGetSuggestions(SuggestionsInfo[] results) {

        Log.d(LOG_TAG, "onGetSuggestions(" + results + ")");

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                textView.setText("Suggestions obtained (TODO - get from results[])");
            }
        });

    }

    @Override
    public void onGetSentenceSuggestions(SentenceSuggestionsInfo[] results) {

        Log.d(LOG_TAG, "onGetSentenceSuggestions(" + results + ")");

        if (results != null) {
            final StringBuffer sb = new StringBuffer("");
            for (SentenceSuggestionsInfo result : results) {
                int n = result.getSuggestionsCount();
                for (int i = 0; i < n; i++) {
                    int m = result.getSuggestionsInfoAt(i).getSuggestionsCount();

                    for (int k = 0; k < m; k++) {
                        sb.append(result.getSuggestionsInfoAt(i).getSuggestionAt(k))
                                .append("\n");
                    }
                    sb.append("\n");
                }
            }

            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    textView.setText(sb.toString());
                }
            });
        }

    }

    @Override
    public void onDestroy() {
        stopService(new Intent(this, SampleSpellCheckerService.class));
        super.onDestroy();
    }
}

那么從SampleSpellCheckerService獲取會話的正確方法是什么?

為了完整起見,這是我的拼寫檢查服務類:

public class SampleSpellCheckerService extends SpellCheckerService {

    public static final String LOG_TAG = SampleSpellCheckerService.class.getSimpleName();

    public SampleSpellCheckerService() {
        Log.d(LOG_TAG, "SampleSpellCheckerService");
    }

    @Override
    public void onCreate() {
        super.onCreate();

        Log.d(LOG_TAG, "SampleSpellCheckerService.onCreate");
    }

    @Override
    public Session createSession() {

        Log.d(LOG_TAG, "createSession");

        return new AndroidSpellCheckerSession();
    }

    private static class AndroidSpellCheckerSession extends SpellCheckerService.Session {

        @Override
        public void onCreate() {

            Log.d(LOG_TAG, "AndroidSpellCheckerSession.onCreate");

        }



        @Override
        public SentenceSuggestionsInfo[] onGetSentenceSuggestionsMultiple(TextInfo[] textInfos, int suggestionsLimit) {

            Log.d(LOG_TAG, "onGetSentenceSuggestionsMultiple");

            SentenceSuggestionsInfo[] suggestionsInfos = null;
            //suggestionsInfo = new SuggestionsInfo();
            //... // look up suggestions for TextInfo
            return suggestionsInfos;
        }

        @Override
        public SuggestionsInfo onGetSuggestions(TextInfo textInfo, int suggestionsLimit) {

            Log.d(LOG_TAG, "onGetSuggestions");

            SuggestionsInfo suggestionsInfo = null;
            //suggestionsInfo = new SuggestionsInfo();
            //... // look up suggestions for TextInfo
            return suggestionsInfo;
        }

        @Override
        public void onCancel() {
            Log.d(LOG_TAG, "onCancel");
        }


    }
}

這是我的清單:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example">

    <permission android:name="android.permission.BIND_TEXT_SERVICE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <service
            android:name="com.example.SampleSpellCheckerService"
            android:label="@string/app_name"
            android:enabled="true"
            android:permission="android.permission.BIND_TEXT_SERVICE">
            <intent-filter>
                <action android:name="android.service.textservice.SpellCheckerService" />
            </intent-filter>

            <meta-data
                android:name="android.view.textservice.scs"
                android:resource="@xml/spellchecker" />
        </service>

        <activity android:name="com.example.SpellCheckerSettingsActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

這是我的spellchecker.xml:

<?xml version="1.0" encoding="utf-8"?>
<spell-checker
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:label="@string/spellchecker_name"
    android:settingsActivity="com.example.SpellCheckerSettingsActivity">
    <subtype
        android:label="@string/subtype_generic"
        android:subtypeLocale="en" />
    />
    <subtype
        android:label="@string/subtype_generic"
        android:subtypeLocale="en_GB" />
    />
</spell-checker>

NB - 我正在使用三星設備進行測試。

據我所知,從文檔和一些示例代碼中,似乎存在一些對Android拼寫檢查API的誤解,導致您的錯誤。

據我所知,您不能直接調用您的服務,因為API目標是您定義一個拼寫檢查器,用戶必須首先從系統設置中選擇。 基本上,您將設置活動(針對服務相關設置顯示)與服務的測試活動混合在一起。

一些更好的教程是在android開發博客中編寫的,在這里 ,可以在github上的鏡像android示例之間找到一些測試客戶端的示例代碼和一個基本的示例服務

到目前為止你得到的是示例服務(盡管鏈接的示例提供了一些代碼來查看方法是如何實現的),你有了locale定義所需的spellchecker.xml以及出現在設置中的拼寫檢查名稱,你已經有了設置活動(在spellchecker.xml中定義,但只要您不需要任何首選項就不需要),並且您有一個實現SpellCheckerSessionListener的活動(盡管您將其命名為設置活動)。

您還需要做的是進入您的settings - > Language & keyboard - >激活Spell checker並選擇拼寫檢查。

要從該拼寫檢查程序獲取會話,您可以使用該API調用API

        final TextServicesManager tsm = (TextServicesManager) getSystemService(
            Context.TEXT_SERVICES_MANAGER_SERVICE);
    mScs = tsm.newSpellCheckerSession(null, null, this, true);

如樣本中所示。

編輯:如果您不需要任何服務設置,可以從xml中刪除xml屬性:

 android:settingsActivity="com.example.SpellCheckerSettingsActivity"

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