如何通过Android窗口小部件使用setBackground

Question

我之前问过类似的问题，但我的要求太含糊。下面的代码绘制了一个漂亮的样式化按钮。单击按钮时，您可以输入数字，并根据数字使用

更改背景颜色

remoteViews.setInt（R.id.nmcButton，“ setBackgroundColor”，颜色）;

不幸的是，当我尝试使用]保留样式时>

remoteViews.setInt（R.id.nmcButton，“ setBackground”，颜色）;

小部件将不会加载。有没有解决的办法？有没有一种方法可以在更改背景颜色的同时保留样式？

以下是一些相关文件

    package test.widget;

    import android.os.Bundle;
    import android.app.PendingIntent;
    import android.appwidget.AppWidgetManager;
    import android.appwidget.AppWidgetProvider;
    import android.content.ComponentName;
    import android.content.Context;
    import android.content.Intent;
    import android.util.Log;
    import android.widget.RemoteViews;
    import android.graphics.Color;

    public class MyWidget extends AppWidgetProvider {

        private final static String TEST_ACTIVITY = "test.widget.action.TEST_ACTIVITY";
        private final static int INTENT_NO_REQUEST = 0; /* no requestCode */
        private final static int INTENT_NO_FLAGS = 0; /* code for no Flags */
        private int count = 9;

        @Override
        public void onReceive(Context context, Intent intent) {
            super.onReceive(context, intent);
            Bundle b = intent.getExtras();
            if (b != null) {
                count = b.getInt("nmcCount");
                callOnUpdate(context);
            }
        }

        private void callOnUpdate(Context context) {
            AppWidgetManager appWidgetManager = AppWidgetManager
                    .getInstance(context);
            ComponentName thisAppWidget = new ComponentName(
                    context.getPackageName(), MyWidget.class.getName());
            int[] appWidgetIds = appWidgetManager.getAppWidgetIds(thisAppWidget);
            onUpdate(context, appWidgetManager, appWidgetIds);
        }

        @Override
        public void onUpdate(Context context, AppWidgetManager appWidgetManager,
                int[] appWidgetIds) {
            super.onUpdate(context, appWidgetManager, appWidgetIds);
            buildUpdate(context, appWidgetManager, appWidgetIds);
        }

        private void buildUpdate(Context context,
                AppWidgetManager appWidgetManager, int[] appWidgetIds) {
            final int N = appWidgetIds.length;
            for (int i = 0; i < N; i++) {
                int appWidgetId = appWidgetIds[i];

                RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
                        R.layout.widget);

                Intent intent = new Intent(TEST_ACTIVITY);
                PendingIntent pendingIntent = PendingIntent.getActivity(context,
                        INTENT_NO_REQUEST, intent, INTENT_NO_FLAGS);
                remoteViews.setOnClickPendingIntent(R.id.nmcButton, pendingIntent);
                remoteViews.setTextViewText(R.id.nmcButton, String.valueOf(count));

                // the code below works, but the button does not have nice styling
                // int color = (count >= 5) ? Color.GREEN : Color.RED;
                // remoteViews.setInt(R.id.nmcButton, "setBackgroundColor", color);

                // this code doesn't work, you get "problem loading widget"
                int color = (count >= 5) ? R.drawable.btn_green
                        : R.drawable.btn_red;
                remoteViews.setInt(R.id.nmcButton, "setBackground", color);

                appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
            }
        }
    }
btn_red.xml

    <?xml version="2.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">

        <item android:state_pressed="true"><shape>
       <solid android:color="#ef4444" />

       <stroke android:width="1dp" android:color="#992f2f" />

       <corners android:radius="3dp" />

       <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" />
    </shape></item>
        <item><shape>
       <gradient android:angle="270" android:endColor="#992f2f" android:startColor="#ef4444" />

       <stroke android:width="1dp" android:color="#992f2f" />

       <corners android:radius="3dp" />

       <padding android:bottom="11dp" android:left="10dp" android:right="10dp" android:top="10dp" />
    </shape></item>

    </selector>
styles.xml

    <resources>
        <style name="ButtonText">
            <item name="android:layout_width">wrap_content</item>
            <item name="android:layout_height">wrap_content</item>
            <item name="android:gravity">center</item>
            <item name="android:layout_margin">1dp</item>
            <item name="android:textSize">10dp</item>
            <item name="android:textStyle">normal</item>
            <item name="android:shadowColor">#000000</item>
            <item name="android:shadowDx">1</item>
            <item name="android:shadowDy">1</item>
            <item name="android:shadowRadius">2</item>
            <item name="android:textColor">#ffffff</item>  
        </style>
        <style name="AppTheme" parent="android:Theme.Light" />
    </resources>

我之前问过类似的问题，但我的要求太含糊。下面的代码绘制了一个漂亮的样式化按钮。当您单击按钮时，您可以输入数字，并基于该数字，...

Answer 1

一个同事有答案，我应该使用：

Answer 2

我尝试了这个，但是那对我没用。

Answer 3

这对我的小部件中的ListView而言不起作用，所以我想出了一种解决方法：

Answer 4

一种简单而可靠的方法是拥有一个图像视图并用我们想要的颜色填充一个位图：