我一直在关注官方Android开发者页面上的App Widgets教程: http://developer.android.com/guide/topics/appwidgets/index.html
我在'小部件'中看到小部件,当我将其添加到主主屏幕时,它会加载指定的活动,但视图不会显示在主屏幕上。
这是布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="@drawable/ic_launcher">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center"
android:text="My Widget..." />
<Button
android:id="@+id/myButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center"
android:text="My test button" />
</LinearLayout>
以下是应用小部件信息:
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="72dp"
android:minHeight="72dp"
android:updatePeriodMillis="86400000"
android:previewImage="@drawable/ic_launcher"
android:initialLayout="@layout/widget_main"
android:configure=".MainActivity"
android:resizeMode="horizontal|vertical"
android:widgetCategory="home_screen|keyguard"
android:initialKeyguardLayout="@layout/widget_main">
</appwidget-provider>
以下是清单中的接收者:
<receiver android:name="MyWidget" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="android.appwidget.action.ACTION_WIDGET_RECEIVER"/>
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/mywidget_info" />
</receiver>
答案 0 :(得分:1)
来自App Widgets Guide on Configuring Activity:
EXTRA_APPWIDGET_ID
)。首次更新小部件时(从guide开始),您确定使用
Intent resultValue = new Intent();
resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
setResult(RESULT_OK, resultValue);
在致电finish()
之前?