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我試圖修改應用程序以使用getShortClassName（）方法而不是顯示完整的類名稱（例如「com.google.app.MainActivity」簡單地爲「.MainActivity」） 。目前的設置沒有給我錯誤，但不顯示文本。在Android中使用getShortClassName（）方法
我認爲解決方案並不複雜，雖然我只是沒有經驗讓它工作。幫幫我？
\t @Override
\t public View getChildView (int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
\t \t MyActivityInfo activity = (MyActivityInfo)getChild(groupPosition, childPosition);
\t \t LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
\t \t View view = inflater.inflate(R.layout.all_activities_child_item, null);
\t \t TextView text1 = (TextView) view.findViewById(android.R.id.text1);
\t \t text1.setText(activity.getName());
//TextView text2 = (TextView) view.findViewById(android.R.id.text2);
//text2.setText(activity.getComponentName().getClassName());
\t \t TextView text2 = (TextView) view.findViewById(android.R.id.text2);
\t \t text2.setText(activity.getShortClassName());
\t
\t \t ImageView icon = (ImageView) view.findViewById(android.R.id.icon);
\t \t icon.setImageDrawable(activity.getIcon());
\t \t return view;
\t }public class MyActivityInfo implements Comparable<MyActivityInfo> {
\t public MyActivityInfo(ComponentName activity, PackageManager pm) {
\t \t this.component_name = activity;
\t \t ActivityInfo act;
\t \t try {
\t \t \t act = pm.getActivityInfo(activity, 0);
\t \t \t this.name = act.loadLabel(pm).toString();
\t \t \t try {
\t \t \t \t this.icon = (BitmapDrawable)act.loadIcon(pm);
\t \t \t }
\t \t \t catch(ClassCastException e) {
\t \t \t \t this.icon = (BitmapDrawable)pm.getDefaultActivityIcon();
\t \t \t }
\t \t \t this.icon_resource = act.getIconResource();
\t \t } catch (NameNotFoundException e) {
\t \t \t this.name = activity.getShortClassName();
\t \t \t this.icon = (BitmapDrawable)pm.getDefaultActivityIcon();
\t \t \t this.icon_resource = 0;
\t \t }
\t \t this.icon_resource_name = null;
\t \t if(this.icon_resource != 0) {
\t \t \t try {
\t \t \t \t this.icon_resource_name = pm.getResourcesForActivity(activity).getResourceName(this.icon_resource);
\t \t \t } catch (Exception e) {}
\t \t }
\t }
\t public ComponentName getComponentName() {
\t \t return component_name;
\t }
\t public BitmapDrawable getIcon() {
\t \t return icon;
\t }
\t public String getName() {
\t \t return name;
\t }
\t public String getIconResourceName() {
\t \t return icon_resource_name;
\t }
public String getShortClassName() {
return class_name;
}
\t protected ComponentName component_name;
\t protected BitmapDrawable icon;
\t protected int icon_resource;
\t protected String icon_resource_name;
\t protected String name;
protected String class_name;
\t @Override
\t public int compareTo(MyActivityInfo another) {
\t \t int cmp_name = this.name.compareTo(another.name);
\t \t if (cmp_name != 0) return cmp_name;
\t \t int cmp_component = this.component_name.compareTo(another.component_name);
\t \t return cmp_component;
\t }
\t @Override
\t public boolean equals(Object other) {
\t \t if(!other.getClass().equals(MyPackageInfo.class)) {
\t \t \t return false;
\t \t }
\t \t MyActivityInfo other_info = (MyActivityInfo)other;
\t \t return this.component_name.equals(other_info.component_name);
\t }
}