我正在尝试设置一个应用程序,我对自己的进步感到满意。我已经设置了一个选项卡小部件,如下所示,它工作正常,但是我设置的图片没有显示。这很令人困惑,因为我似乎有![在此处输入图像描述][1]所有正确的代码。任何评论都会大大复活:)
因此,回顾一下,我试图在每个选项卡下放置图标,例如收藏夹下的星形和警报下的时钟等......
TrainMain.java
package com.tris.trainbuzzer;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
@SuppressWarnings({ "deprecation" })
public class TrainMain extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_train_main);
Resources res = getResources();
TabHost tabHost = getTabHost();
// Tab for planner
TabSpec plannerspec = tabHost.newTabSpec("Planner");
plannerspec.setIndicator("Planner",
res.getDrawable(R.drawable.icon_planner_tab));
Intent plannerIntent = new Intent(this, PlannerActivity.class);
plannerspec.setContent(plannerIntent);
// Tab for alerts
TabSpec alertsspec = tabHost.newTabSpec("Alerts");
// setting Title and Icon for the Tab
alertsspec.setIndicator("Alerts",
res.getDrawable(R.drawable.icon_alerts_tab));
Intent alertsIntent = new Intent(this, AlertsActivity.class);
alertsspec.setContent(alertsIntent);
// Tab for settings
TabSpec settingsspec = tabHost.newTabSpec("Settings");
settingsspec.setIndicator("Settings",
res.getDrawable(R.drawable.icon_settings_tab));
Intent settingsIntent = new Intent(this, SettingsActivity.class);
settingsspec.setContent(settingsIntent);
// Tab for favourites
TabSpec favouritesspec = tabHost.newTabSpec("Favourites");
favouritesspec.setIndicator("Favourites",
res.getDrawable(R.drawable.icon_favourites_tab));
Intent favouritesIntent = new Intent(this, FavouritesActivity.class);
favouritesspec.setContent(favouritesIntent);
// Adding all TabSpec to TabHost
tabHost.addTab(plannerspec); // Adding planner tab
tabHost.addTab(favouritesspec); // Adding favourites tab
tabHost.addTab(alertsspec); // Adding alerts tab
tabHost.addTab(settingsspec); // Adding settings tab
}
}
activity_train_main.xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
</TabHost>
icon_planner_tab.xml(在可绘制文件中)
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- When selected, use grey -->
<item android:state_selected="true"
android:drawable="@drawable/planner_gray" ></item>
<!-- When selected, use white -->
<item
android:drawable="@drawable/planner_white"></item>
</selector>