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我正在编写一个 Twitter 应用程序,并遵循 android-developers 的 Linkify 指南(http: //android-deve..linkify-your-text.html)使用户名(例如@brk3)可点击。

然后,我创建了一个内容提供程序实现来获取单击这些意图时触发的意图。我的问题是意图似乎没有找到我的提供者,因此单击其中一个链接时出现以下异常:(例如单击用户名“Arubin”时)

E/AndroidRuntime( 5228): android.content.ActivityNotFoundException: No Activity found to handle Intent { 
act=android.intent.action.VIEW dat=content://com.bourke.test/screenname/Arubin (has extras) }
E/AndroidRuntime( 5228):        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.j
ava:1512)
E/AndroidRuntime( 5228):        at      android.app.Instrumentation.execStartActivity(Instrumentation.java:138
4)
...

这是我的 AndroidManifest.xml 的相关部分:

<application
    android:label="@string/app_name"
    android:icon="@drawable/ic_launcher"
    android:name="TestApplication"
    android:uiOptions="splitActionBarWhenNarrow">

    <provider
       android:name="com.bourke.test.provider.TestProvider"
       android:authorities="com.bourke.test.provider" />

    <activity android:name="TestActivity"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT" />
            <data android:mimeType=
                "vnd.android.cursor.item/vnd.test.screenname" />;
        </intent-filter>
    </activity>
...

和提供者:

package com.bourke.test.provider;

public class TestProvider extends ContentProvider {

    /* The root authority for this provider */
    public static final String AUTHORITY = "com.bourke.test.provider";

    private static final String BASE_PATH = "screenname";

    public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY
            + "/" + BASE_PATH);

    public static final int SCREEN_NAMES = 0;
    public static final int SCREEN_NAME = 1;

    private static final UriMatcher mUriMatcher = new UriMatcher(
            UriMatcher.NO_MATCH);

    static {
        mUriMatcher.addURI(AUTHORITY, BASE_PATH, SCREEN_NAMES);
        mUriMatcher.addURI(AUTHORITY, BASE_PATH+"/*", SCREEN_NAME);
    }

    @Override
    public boolean onCreate() {
        Log.d(TAG, "XXX: onCreate()");

        /* The provider was successfully loaded */
        return true;
    }

    @Override
    public int update(Uri uri, ContentValues values, String where,
            String[] whereArgs) {
        throw new UnsupportedOperationException();
    }

    @Override
    public int delete(Uri uri, String where, String[] whereArgs) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Uri insert(Uri uri, ContentValues initialValues) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getType(Uri uri) {
        Log.d(TAG, "XXX: getType()");

        switch (mUriMatcher.match(uri)) {
            case SCREEN_NAMES:
                Log.d(TAG, "XXX1: SCREEN_NAMES");
                return "vnd.android.cursor.dir/vnd.test.screenname";

            case SCREEN_NAME:
                Log.d(TAG, "XXX2: SCREEN_NAME");
                return "vnd.android.cursor.item/vnd.test.screenname";

            default:
                // any other kind of URL is illegal
                throw new IllegalArgumentException("Unknown URL " + uri);
        }
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sort) {
        throw new UnsupportedOperationException();
    }
}

如您所见,我并不真正关心使用数据库后端,尽管在不久的将来添加它可能会很有用。现在我只希望能够获取 content://com.bourke.test/screenname/ 样式的 URI,因此我的活动可以进行 Twitter API 调用以显示有关适当用户的信息。

任何有关崩溃原因的反馈或信息都会非常有帮助。

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1 回答 1

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从错误我们可以假设您调用content://com.bourke.test/screenname/Arubin但从您的代码看起来应该是content://com.bourke.test.provider/screenname/Arubin......所以您应该.provider在调用此 ContentUri 时添加或将其删除public static final String AUTHORITY="...";

于 2012-02-27T12:56:20.940 回答