使用配置活动中的复选框在窗口小部件中显示和隐藏textview

时间：2014-01-08 06:19:45

标签： android checkbox widget textview

我是一个菜鸟，并且正在努力应该做一些相对简单的事情。

我创建了一个包含8个TextView的小部件，当Widget被初始化时，这个小部件由带有文本字段的config活动填充。所有这一切都运行良好，但我希望用户能够在初始化时进一步自定义小部件。

我在每个文本字段旁边放置了一个复选框，用于使每个字段可见（选中）或隐藏（未选中），但我很难过如何让这些复选框将textviews设置为在窗口小部件类中可见或隐藏。

配置布局XML：

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tvwelcome"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="@string/widget_config_title"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/tvinstructions"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvwelcome"
        android:text="@string/widget_config_info"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <Button
        android:id="@+id/bwidgetconfig"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:text="@string/widget_config_finishbutton" />

    <EditText
        android:id="@+id/etemail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/bwidgetconfig"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/etphone"
        android:layout_marginBottom="25dp"
        android:ems="10"
        android:hint="@string/widget_config_emailhint"
        android:inputType="textEmailAddress" />

    <EditText
        android:id="@+id/etphone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etemail"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@+id/cbPhone"
        android:ems="10"
        android:hint="@string/widget_config_phonehint"
        android:inputType="phone" />

    <EditText
        android:id="@+id/etaddress4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etphone"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/etaddress3"
        android:ems="10"
        android:hint="@string/widget_config_address4hint"
        android:inputType="textPostalAddress"
        android:maxLines="1" />

    <EditText
        android:id="@+id/etaddress3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress4"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/etaddress2"
        android:ems="10"
        android:hint="@string/widget_config_address3hint"
        android:inputType="textPostalAddress"
        android:maxLines="1" />

    <EditText
        android:id="@+id/etaddress2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress3"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/etaddress1"
        android:ems="10"
        android:hint="@string/widget_config_address2hint"
        android:inputType="textPostalAddress"
        android:maxLines="1" />

    <EditText
        android:id="@+id/etaddress1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress2"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/etname"
        android:ems="10"
        android:hint="@string/widget_config_address1hint"
        android:inputType="textPostalAddress"
        android:maxHeight="10dp"
        android:maxLines="1" />

    <EditText
        android:id="@+id/etname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress1"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@+id/cbName"
        android:ems="10"
        android:hint="@string/widget_config_namehint"
        android:inputType="textPersonName"
        android:maxHeight="10dp" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/etcontext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etname"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:ems="10"
        android:hint="@string/widget_config_contexthint"
        android:maxHeight="10dp"
        android:maxLines="1"
        android:textSize="15sp" />

    <CheckBox
        android:id="@+id/cbName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress1"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/etcontext"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbAddress1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress2"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/etaddress1"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbAddress2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress3"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/cbAddress1"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbAddress3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etaddress4"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/cbAddress2"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbAddress4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etphone"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/cbAddress3"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbPhone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/etemail"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/etphone"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

    <CheckBox
        android:id="@+id/cbEmail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/etemail"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/etemail"
        android:text="@string/widget_config_checkbox"
        android:onClick="onCheckboxClicked" />

</RelativeLayout>

小组件配置类：

package com.###.###;

import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RemoteViews;

public class WidgetConfig extends Activity implements OnClickListener{

    EditText infocontext;
    EditText infoname;
    EditText infoaddress1;
    EditText infoaddress2;
    EditText infoaddress3;
    EditText infoaddress4;
    EditText infophone;
    EditText infoemail;
    AppWidgetManager awm;
    Context c;
    int awID;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.widgetconfig);
        Button b = (Button)findViewById(R.id.bwidgetconfig);
        b.setOnClickListener(this);
        c = WidgetConfig.this;
        infocontext = (EditText)findViewById(R.id.etcontext);
        infoname = (EditText)findViewById(R.id.etname);
        infoaddress1 = (EditText)findViewById(R.id.etaddress1);
        infoaddress2 = (EditText)findViewById(R.id.etaddress2);
        infoaddress3 = (EditText)findViewById(R.id.etaddress3);
        infoaddress4 = (EditText)findViewById(R.id.etaddress4);
        infophone = (EditText)findViewById(R.id.etphone);
        infoemail = (EditText)findViewById(R.id.etemail);
        //Getting info about the widget that launched this Activity
        Intent i = getIntent();
        Bundle extras = i.getExtras();
        if (extras !=null){
            awID = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID
            );  
        }else{
            finish();
        }
        awm = AppWidgetManager.getInstance(c);
    }

    @Override
    public void onClick(View v) {
        String str_context = infocontext.getText().toString();
        String str_name = infoname.getText().toString();
        String str_address1 = infoaddress1.getText().toString();
        String str_address2 = infoaddress2.getText().toString();
        String str_address3 = infoaddress3.getText().toString();
        String str_address4 = infoaddress4.getText().toString();
        String str_phone = infophone.getText().toString();
        String str_email = infoemail.getText().toString();

        RemoteViews views = new RemoteViews(c.getPackageName(), R.layout.widget);

        views.setTextViewText(R.id.tvContext, str_context);
        views.setTextViewText(R.id.tvName, str_name);
        views.setTextViewText(R.id.tvAddress1, str_address1);
        views.setTextViewText(R.id.tvAddress2, str_address2);
        views.setTextViewText(R.id.tvAddress3, str_address3);
        views.setTextViewText(R.id.tvAddress4, str_address4);
        views.setTextViewText(R.id.tvPhone, str_phone);
        views.setTextViewText(R.id.tvEmail, str_email);

        awm.updateAppWidget(awID, views);

        Intent result = new Intent();
        result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, awID);
        setResult(RESULT_OK, result);
        finish();

    }

}

小工具类：     package com。###。###; 

import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.widget.RemoteViews;
import android.widget.Toast;

public class Widget extends AppWidgetProvider{

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

    @Override
    public void onDeleted(Context context, int[] appWidgetIds) {
        super.onDeleted(context, appWidgetIds);
        Toast.makeText(context, "Widget deleted from Homescreen", Toast.LENGTH_SHORT).show();
    }

}

如何使用复选框隐藏/显示文本视图的任何帮助将不胜感激。谢谢！

1 个答案:

答案 0 :(得分：0)

您可以列出复选框和文本视图列表，单击复选框后，您可以在列表中获取其位置，然后使用textview.setVisibility（View.VISIBLE）或View.GONE.Don't use View.INVISIBLE。

您可以设置每个复选框的标记及其位置，稍后您将使用getTag来了解复选框的索引

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