首先，我阅读了有关xda和谷歌文档的所有类似问题和回复。但是，我仍然不知道为什么我的代码不起作用。
小工具代码：
public class MyWidget extends AppWidgetProvider
{
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
{
// There may be multiple widgets active, so update all of them
final int N = appWidgetIds.length;
for (int i = 0; i < N; i++)
{
int appWidgetId = appWidgetIds[i];
Intent intent = new Intent(context, MyWidgetConfigureActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.my_widget);
views.setOnClickPendingIntent(R.id.widget_container, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
@Override
public void onDeleted(Context context, int[] appWidgetIds)
{
// When the user deletes the widget, delete the preference associated with it.
final int N = appWidgetIds.length;
for (int i = 0; i < N; i++)
{
MyWidgetConfigureActivity.deleteTitlePref(context, appWidgetIds[i]);
}
}
@Override
public void onEnabled(Context context)
{
// Enter relevant functionality for when the first widget is created
}
@Override
public void onDisabled(Context context)
{
// Enter relevant functionality for when the last widget is disabled
}
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId)
{
CharSequence widgetText = MyWidgetConfigureActivity.loadTitlePref(context, appWidgetId);
// Construct the RemoteViews object
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.my_widget);
views.setTextViewText(R.id.appwidget_text, widgetText);
// Instruct the widget manager to update the widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
我的小部件布局：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/widget_margin"
android:background="#09C"
android:id="@+id/widget_container">
<TextView
android:id="@+id/appwidget_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/appwidget_text"
android:textColor="#ffffff"
android:textSize="24sp"
android:textStyle="bold|italic"
android:layout_margin="8dp"
android:contentDescription="@string/appwidget_text"
android:background="#09C"/>
</RelativeLayout>
问题 - 我的配置活动仅在将小部件添加到主屏幕时启动。点击已添加的小部件后，没有任何反应。你能告诉我这个问题是什么吗？
[编辑] 我的活动代码：
package com.example.michal.widgettest2;
import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
/**
* The configuration screen for the {@link MyWidget MyWidget} AppWidget.
*/
public class MyWidgetConfigureActivity extends Activity
{
int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
EditText mAppWidgetText;
private static final String PREFS_NAME = "com.example.michal.widgettest2.MyWidget";
private static final String PREF_PREFIX_KEY = "appwidget_";
public MyWidgetConfigureActivity()
{
super();
}
@Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
// Set the result to CANCELED. This will cause the widget host to cancel
// out of the widget placement if the user presses the back button.
setResult(RESULT_CANCELED);
setContentView(R.layout.my_widget_configure);
mAppWidgetText = (EditText) findViewById(R.id.appwidget_text);
findViewById(R.id.add_button).setOnClickListener(mOnClickListener);
// Find the widget id from the intent.
Intent intent = getIntent();
Bundle extras = intent.getExtras();
if (extras != null)
{
mAppWidgetId = extras.getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
}
// If this activity was started with an intent without an app widget ID, finish with an error.
if (mAppWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID)
{
finish();
return;
}
mAppWidgetText.setText(loadTitlePref(MyWidgetConfigureActivity.this, mAppWidgetId));
}
View.OnClickListener mOnClickListener = new View.OnClickListener()
{
public void onClick(View v)
{
final Context context = MyWidgetConfigureActivity.this;
// When the button is clicked, store the string locally
String widgetText = mAppWidgetText.getText().toString();
saveTitlePref(context, mAppWidgetId, widgetText);
// It is the responsibility of the configuration activity to update the app widget
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
MyWidget.updateAppWidget(context, appWidgetManager, mAppWidgetId);
// Make sure we pass back the original appWidgetId
Intent resultValue = new Intent();
resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
setResult(RESULT_OK, resultValue);
finish();
}
};
// Write the prefix to the SharedPreferences object for this widget
static void saveTitlePref(Context context, int appWidgetId, String text)
{
SharedPreferences.Editor prefs = context.getSharedPreferences(PREFS_NAME, 0).edit();
prefs.putString(PREF_PREFIX_KEY + appWidgetId, text);
prefs.commit();
}
// Read the prefix from the SharedPreferences object for this widget.
// If there is no preference saved, get the default from a resource
static String loadTitlePref(Context context, int appWidgetId)
{
SharedPreferences prefs = context.getSharedPreferences(PREFS_NAME, 0);
String titleValue = prefs.getString(PREF_PREFIX_KEY + appWidgetId, null);
if (titleValue != null)
{
return titleValue;
} else
{
return context.getString(R.string.appwidget_text);
}
}
static void deleteTitlePref(Context context, int appWidgetId)
{
SharedPreferences.Editor prefs = context.getSharedPreferences(PREFS_NAME, 0).edit();
prefs.remove(PREF_PREFIX_KEY + appWidgetId);
prefs.commit();
}
}
我的活动布局：
<?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="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/configure"
android:layout_marginBottom="8dp"/>
<EditText
android:id="@+id/appwidget_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"/>
<Button
android:id="@+id/add_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/add_widget"
android:layout_marginTop="8dp"/>
</LinearLayout>
答案 0 :(得分：3)
您需要更新static void updateAppWidget以支持点击操作以编辑小部件。
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId){
CharSequence widgetText = MyWidgetConfigureActivity.loadTitlePref(context, appWidgetId);
// Construct the RemoteViews object
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.my_widget);
views.setTextViewText(R.id.appwidget_text, widgetText);
///////////////////////////////////////////////////required
Intent intent = new Intent(context, MyWidgetConfigureActivity.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); //set widget id
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.my_widget);
views.setOnClickPendingIntent(R.id.widget_container, pendingIntent);
///////////////////////////////////////////////////////////
// Instruct the widget manager to update the widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}