java如何从安卓 studio中的库模块调用活动

1 月，3 周 Questions & Answers 12351

我试图从应用程序中的库模块调用活动。我一直在犯错误

安卓.content.ActivityNotFoundException: Unable to find explicit activity class {com.nextgis.mobile/com.nextgis.mobile.activity.MainActivity}; have you declared this activity in your AndroidManifest.xml?

我把这次活动称为

Intent intentGIS = new Intent(安卓.content.Intent.ACTION_VIEW);
intentGIS.setComponent(new ComponentName("com.nextgis.mobile",
                    "com.nextgis.mobile.activity.MainActivity"));
startActivity(intentGIS);

应用程序清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
xmlns:tools="http://schemas.安卓.com/tools"
package="com.disarm.sanna.pdm">

<uses-permission 安卓:name="安卓.permission.READ_PHONE_STATE" />
<uses-permission 安卓:name="安卓.permission.CHANGE_WIFI_STATE" />
<uses-permission 安卓:name="安卓.permission.CHANGE_NETWORK_STATE" />

<uses-permission 安卓:name="安卓.permission.RECORD_AUDIO" />
<uses-permission 安卓:name="安卓.permission.CLEAR_APP_CACHE" />

<uses-permission 安卓:name="安卓.permission.READ_EXTERNAL_STORAGE" />
<uses-permission-sdk-23 安卓:name="安卓.permission.WRITE_SETTINGS" />

<uses-permission 安卓:name="安卓.permission.READ_CONTACTS" />

<uses-permission 安卓:name="安卓.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission 安卓:name="安卓.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission 安卓:name="安卓.permission.ACCESS_FINE_LOCATION"/>
<uses-permission 安卓:name="安卓.permission.ACCESS_NETWORK_STATE"/>
<uses-permission 安卓:name="安卓.permission.ACCESS_WIFI_STATE"/>
<uses-permission 安卓:name="安卓.permission.AUTHENTICATE_ACCOUNTS"/>
<uses-permission 安卓:name="安卓.permission.INTERNET"/>
<uses-permission 安卓:name="安卓.permission.GET_ACCOUNTS"/>
<uses-permission 安卓:name="安卓.permission.MANAGE_ACCOUNTS"/>
<uses-permission 安卓:name="安卓.permission.READ_SYNC_SETTINGS"/>
<uses-permission 安卓:name="安卓.permission.READ_SYNC_STATS"/>
<uses-permission 安卓:name="安卓.permission.USE_CREDENTIALS"/>
<uses-permission 安卓:name="安卓.permission.WAKE_LOCK"/>
<uses-permission 安卓:name="安卓.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission 安卓:name="安卓.permission.WRITE_SYNC_SETTINGS"/>
<uses-permission 安卓:name="安卓.permission.VIBRATE"/>


<!--
    <uses-permission 安卓:name="安卓.permission.CAMERA"/>
-->

<uses-feature
    安卓:name="安卓.hardware.location"
    安卓:required="true"
    />
<uses-feature
    安卓:name="安卓.hardware.telephony"
    安卓:required="false"
    />
<uses-feature
    安卓:name="安卓.hardware.wifi"
    安卓:required="false"
    />
<!--
    <uses-feature
        安卓:name="安卓.hardware.camera"
        安卓:required="false"
        />
    <uses-feature
        安卓:name="安卓.hardware.compass"
        安卓:required="false"
        />
-->


<supports-screens
    安卓:largeScreens="true"
    安卓:smallScreens="true"
    安卓:anyDensity="true"
    安卓:normalScreens="true"
    安卓:xlargeScreens="true"
    安卓:resizeable="true"
    />

<application
    安卓:allowBackup="true"
    安卓:icon="@drawable/logo"
    安卓:label="@string/app_name"
    安卓:supportsRtl="true"
    安卓:theme="@style/AppTheme"
    tools:node="replace">
    <activity
        安卓:name=".SplashActivity"
        安卓:windowSoftInputMode="stateHidden|adjustUnspecified"
        安卓:theme="@style/AppTheme.NoActionBar">
        <intent-filter>
            <action 安卓:name="安卓.intent.action.MAIN" />

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

    <activity
        安卓:name="com.disarm.sanna.pdm.ShareActivity"
        安卓:label="@string/app_name">
    </activity>

    <activity 安卓:name=".SelectCategoryActivity"
        安卓:label="@string/app_name">
    </activity>

    <activity 安卓:name=".SocialShareActivity"
        安卓:label="@string/app_name">
    </activity>

    <activity
        安卓:name=".MainActivity"
        安卓:label="@string/app_name"
        安卓:theme="@style/AppTheme.NoActionBar">
    </activity>
    <activity
        安卓:name=".ActivityList"
        安卓:windowSoftInputMode="stateHidden|adjustPan"
        安卓:theme="@style/Theme.AppCompat.DayNight.NoActionBar">
    </activity>
    <activity
        安卓:name=".Capture.Photo"
        安卓:theme="@style/AppCompatAlertDialogStyle"
        >
    </activity>
    <activity
        安卓:name=".Capture.Video"
        安卓:theme="@style/AppCompatAlertDialogStyle"
        >
    </activity>
    <activity
        安卓:label="Record Audio"
        安卓:name=".Capture.AudioCapture"
        安卓:theme="@style/Theme.AppCompat.Light.Dialog"
        >
    </activity>
    <activity
        安卓:label="@string/allow_setting"
        安卓:name=".WriteSettingActivity"
        安卓:theme="@style/AppTheme"
        >
    </activity>
    <service
        安卓:name=".Service.SyncService"
        安卓:enabled="true"
        安卓:exported="true" />
    <service 安卓:name=".DisarmConnect.MyService" />
</application>
</manifest>

库清单：

<?xml version="1.0" encoding="utf-8"?>
<!--
~ Project:  NextGIS Mobile
~ Purpose:  Mobile GIS for Android.
~ Author:   Dmitry Baryshnikov (aka Bishop), bishop.dev@gmail.com
~ Author:   NikitaFeodonit, nfeodonit@yandex.com
~ Author:   Stanislav Petriakov, becomeglory@gmail.com
~      ******************************************************************************
~ Copyright (c) 2012-2016 NextGIS, info@nextgis.com
~
~ This program is free software: you can redistribute it and/or modify
~ it under the terms of the GNU General Public License as published by
~ the Free Software Foundation, either version 3 of the License, or
~ (at your option) any later version.
~
~ This program is distributed in the hope that it will be useful,
~ but WITHOUT ANY WARRANTY; without even the implied warranty of
~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
~ GNU General Public License for more details.
~
~ You should have received a copy of the GNU General Public License
~ along with this program.  If not, see     <http://www.gnu.org/licenses/>.
-->

<manifest xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
      package="com.nextgis.mobile"
>



<application
    安卓:allowBackup="true"
    安卓:label="@string/app_name"
    >
    <activity
        安卓:name=".activity.MainActivity"
        安卓:label="@string/app_name"
        >
    </activity>

    <activity
        安卓:name=".activity.SettingsActivity"
        安卓:label="@string/action_settings"
        />

    <activity
        安卓:name=".activity.NGWSettingsActivityProxy"
        安卓:label="@string/ngw_settings"
        />

    <activity
        安卓:name=".activity.AboutActivity"
        安卓:label="@string/action_help"
        />

    <activity
        安卓:name=".activity.CreateVectorLayerActivity"
        安卓:label="@string/create_layer"
        安卓:screenOrientation="portrait"
        />

    <service
        安卓:name="com.nextgis.mobile.datasource.SyncService"
        >
        <intent-filter>
            <action
                安卓:name="安卓.content.SyncAdapter"
                />
        </intent-filter>
        <meta-data
            安卓:name="安卓.content.SyncAdapter"
            安卓:resource="@xml/syncadapter"
            />
    </service>

    <provider
        安卓:name="com.nextgis.maplib.datasource.LayerContentProvider"
        安卓:authorities="com.nextgis.mobile.provider"
        安卓:exported="false"
        安卓:syncable="true"
        />

</application>

</manifest>

我在gradle文件中为模块app添加了compile project(':gisapp')。我知道gradle是自动合并的，但我可能错了

我做错了什么

注：This是我用作库的项目

共 (1) 个答案

# 1 楼答案
我们可以使用反射来获取类对象

上课。forName（“com.mypackage.mymain活动”）

在库项目中添加此代码以调用
```
try {
      Intent myIntent = new Intent(this,Class.forName("com.mypackage.myMainActivity"));
      startActivity(myIntent );
} catch (ClassNotFoundException e) {
     e.printStackTrace();
}
```
“com.mypackage.myMainActivity”是主项目中存在的活动，我们需要从其库项目中调用它

Python中文网

有 Java 编程相关的问题?

java如何从安卓 studio中的库模块调用活动

共 (1) 个答案

# 1 楼答案