android - 未找到 laucher Activity !安卓小工具

Question

我是 Android 中小部件的新手，环顾四周时注意到人们在首次为小部件创建项目时未选中“创建 Activity ”设置，所以我也这样做了。现在，当我运行小部件时出现此错误:

[2013-10-04 18:08:35 - AwesomeFileBuilderWidget] No Launcher activity found!
[2013-10-04 18:08:35 - AwesomeFileBuilderWidget] The launch will only sync the application package on the device!
[2013-10-04 18:08:35 - AwesomeFileBuilderWidget] Performing sync
[2013-10-04 18:08:35 - AwesomeFileBuilderWidget] Automatic Target Mode: Unable to detect device compatibility. Please select a target device.

我现在认为我应该选中“创建 Activity ”设置。这会是问题吗？如果是这样，我该如何更改“创建 Activity ”设置？

顺便说一句，这是我的 Android list :

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.awesomefilebuilderwidget"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="18" />

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

    <receiver android:name=".AwesomeFileBuilderWidget" android:label="@string/app_name">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
     </receiver>

        <intent-filter>
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
        </intent-filter>
        <meta-data android:name="android.appwidget.provider"
            android:resource="@xml/widget_stuff"/>

   <activity android:name=".WidgetConfig" android:label="@string/app_name">
       <intent-filter>
           <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
       </intent-filter>
   </activity>

</application>

</manifest>

这是我尝试在真实设备上运行小部件时遇到的完整错误:

[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] ------------------------------
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] Android Launch!
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] adb is running normally.
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] No Launcher activity found!
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] The launch will only sync the application package on the device!
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] Performing sync
[2013-10-04 19:02:33 - AwesomeFileBuilderWidget] Automatic Target Mode: Unable to detect device compatibility. Please select a target device.
[2013-10-04 19:02:46 - AwesomeFileBuilderWidget] Uploading AwesomeFileBuilderWidget.apk onto device 'HT18YMA05067'
[2013-10-04 19:02:51 - AwesomeFileBuilderWidget] Failed to install AwesomeFileBuilderWidget.apk on device 'HT18YMA05067': timeout
[2013-10-04 19:02:51 - AwesomeFileBuilderWidget] Launch canceled!

这是我的类和 xml 文件:AFBWidget.java:

import java.util.Random;

import com.example.awesomefilebuilderwidget.R;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.widget.RemoteViews;
import android.widget.Toast;


public class AFBWidget extends AppWidgetProvider{

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
        int[] appWidgetIds) {
    // TODO Auto-generated method stub
    super.onUpdate(context, appWidgetManager, appWidgetIds);
    Random r = new Random();
    int randomInt = r.nextInt(1000000000);
    String rand = String.valueOf(randomInt);

    final int N = appWidgetIds.length;

    for (int i = 0; i < N; i++){
        int awID = appWidgetIds[i];
        RemoteViews v = new RemoteViews(context.getPackageName(), R.layout.widget);
        v.setTextViewText(R.id.tvwidgetUpdate, rand);
        appWidgetManager.updateAppWidget(awID, v);
    }

}

小部件.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/tvConfigInput"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" />

<Button
    android:id="@+id/bwidgetOpen"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Button" />

<TextView
    android:id="@+id/tvwidgetUpdate"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" />

</LinearLayout>

小部件配置文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<EditText
    android:id="@+id/etwidgetconfig"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10" >

    <requestFocus />
</EditText>

<Button
    android:id="@+id/bwidgetconfig"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Button" />

</LinearLayout>

注意:这个小部件还没有完全完成，我应该仍然可以将我当前的小部件下载到主屏幕，即使该小部件还没有任何功能。

Answer 1

当您没有启动器 Activity 时，构建环境不知道如何启动您的应用程序。因此，您会收到错误消息。

如第二条消息所述，

The launch will only sync the application package on the device!

这基本上意味着您需要自己将小部件添加到主屏幕，应用程序应该由构建系统安装/更新。

---

真正的问题是最后一行

Automatic Target Mode: Unable to detect device compatibility. Please select a target device.

您应该尝试在您的 IDE 中手动选择目标设备，您的应用和您用于调试的模拟器/设备之间也可能存在版本控制问题。一个常见问题是使用谷歌 API，这需要安装了谷歌组件的真实设备，请参阅 this question .