Android example source code file (MetaDataTest.java)

This example Android source code file (MetaDataTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activityinfo, android, androidtestcase, componentname, content, exception, io, ioexception, mediumtest, meta, metadatatest, no, os, serviceinfo, smalltest, string, test, unable, xmlpullparserexception

The MetaDataTest.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.app.activity;

import android.content.ComponentName;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.content.pm.PermissionInfo;
import android.content.pm.ProviderInfo;
import android.content.pm.ServiceInfo;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.os.Bundle;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;
import com.android.frameworks.coretests.R;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;

/**
 * Tests for meta-data associated with application components.
 */
public class MetaDataTest extends AndroidTestCase {

    private void checkMetaData(ComponentName cn, PackageItemInfo ci)
            throws IOException, XmlPullParserException {
        assertNotNull("Unable to find component " + cn, ci);

        Bundle md = ci.metaData;
        assertNotNull("No meta data found", md);

        assertEquals("foo", md.getString("com.android.frameworks.coretests.string"));
        assertTrue(md.getBoolean("com.android.frameworks.coretests.boolean"));
        assertEquals(100, md.getInt("com.android.frameworks.coretests.integer"));
        assertEquals(0xff000000, md.getInt("com.android.frameworks.coretests.color"));

        assertEquals((double) 1001,
                Math.floor(md.getFloat("com.android.frameworks.coretests.float") * 10 + .5));

        assertEquals(R.xml.metadata, md.getInt("com.android.frameworks.coretests.reference"));

        XmlResourceParser xml = ci.loadXmlMetaData(mContext.getPackageManager(),
                "com.android.frameworks.coretests.reference");
        assertNotNull(xml);

        int type;
        while ((type = xml.next()) != XmlPullParser.START_TAG
                && type != XmlPullParser.END_DOCUMENT) {
        }
        assertEquals(XmlPullParser.START_TAG, type);
        assertEquals("thedata", xml.getName());

        // method 1: direct access
        final String rawAttr = xml.getAttributeValue(null, "rawText");
        assertEquals("some raw text", rawAttr);

        // method 2: direct access of typed value
        final int rawColorIntAttr = xml.getAttributeIntValue(null, "rawColor", 0);
        assertEquals(0xffffff00, rawColorIntAttr);
        final String rawColorStrAttr = xml.getAttributeValue(null, "rawColor");
        assertEquals("#ffffff00", rawColorStrAttr);

        // method 2: direct access of resource attribute
        final String nameSpace = "http://schemas.android.com/apk/res/android";
        final int colorIntAttr = xml.getAttributeIntValue(nameSpace, "color", 0);
        assertEquals(0xffff0000, colorIntAttr);
        final String colorStrAttr = xml.getAttributeValue(nameSpace, "color");
        assertEquals("#ffff0000", colorStrAttr);

        // method 3: styled access (borrowing an attr from view system here)
        TypedArray a = mContext.obtainStyledAttributes(xml,
                android.R.styleable.TextView);
        String styledAttr = a.getString(android.R.styleable.TextView_text);
        assertEquals("text", styledAttr);
        a.recycle();
        
        xml.close();
    }

    @SmallTest
    public void testActivityWithData() throws Exception {
        ComponentName cn = new ComponentName(mContext, LocalActivity.class);
        ActivityInfo ai = mContext.getPackageManager().getActivityInfo(
                cn, PackageManager.GET_META_DATA);

        checkMetaData(cn, ai);

        ai = mContext.getPackageManager().getActivityInfo(cn, 0);

        assertNull("Meta data returned when not requested", ai.metaData);
    }

    @SmallTest
    public void testReceiverWithData() throws Exception {
        ComponentName cn = new ComponentName(mContext, LocalReceiver.class);
        ActivityInfo ai = mContext.getPackageManager().getReceiverInfo(
                cn, PackageManager.GET_META_DATA);

        checkMetaData(cn, ai);

        ai = mContext.getPackageManager().getReceiverInfo(cn, 0);

        assertNull("Meta data returned when not requested", ai.metaData);
    }

    @SmallTest
    public void testServiceWithData() throws Exception {
        ComponentName cn = new ComponentName(mContext, LocalService.class);
        ServiceInfo si = mContext.getPackageManager().getServiceInfo(
                cn, PackageManager.GET_META_DATA);

        checkMetaData(cn, si);

        si = mContext.getPackageManager().getServiceInfo(cn, 0);

        assertNull("Meta data returned when not requested", si.metaData);
    }

    @MediumTest
    public void testProviderWithData() throws Exception {
        ComponentName cn = new ComponentName(mContext, LocalProvider.class);
        ProviderInfo pi = mContext.getPackageManager().resolveContentProvider(
                "com.android.frameworks.coretests.LocalProvider",
                PackageManager.GET_META_DATA);
        checkMetaData(cn, pi);

        pi = mContext.getPackageManager().resolveContentProvider(
                "com.android.frameworks.coretests.LocalProvider", 0);

        assertNull("Meta data returned when not requested", pi.metaData);
    }

    @SmallTest
    public void testPermissionWithData() throws Exception {
        ComponentName cn = new ComponentName("foo",
                "com.android.frameworks.coretests.permission.TEST_GRANTED");
        PermissionInfo pi = mContext.getPackageManager().getPermissionInfo(
                cn.getClassName(), PackageManager.GET_META_DATA);
        checkMetaData(cn, pi);

        pi = mContext.getPackageManager().getPermissionInfo(
                cn.getClassName(), 0);

        assertNull("Meta data returned when not requested", pi.metaData);
    }
}