android - 在android中创建自己的操作栏

Question

我对 android 中的操作栏有一些问题。我想在左侧和右侧有一些图标。在左侧我想有 2 个图标和文本，在右侧我想有 6 个图标，但是当文本很长时我想在右侧隐藏一些图标。在标准操作栏中，我只能从右到左添加项目，所以我决定创建自己的操作栏。我该如何开始？我需要知道什么才能做到这一点。你能给我一些建议或例子吗？

Answer 1

非常简单。创建将从某些布局扩展的新类。膨胀将具有图标和按钮的 xml。并为逻辑显示\隐藏\设置监听器等制作方法。我很早就做了，但现在我可以说这不是一个好主意。有指南并且非常重要，因为它必须创建应用程序。

我旧项目的例子:

public class ActionBar extends RelativeLayout {
    private ToggleButton buttonSave;
    private ToggleButton buttonClear;
    private ToggleButton buttonHelp;
    private ToggleButton buttonBack;
    private FrameLayout sepparator;
    private TextView textview;
    private ImageView imageViewIcon;


    public ActionBar(Context context, AttributeSet attrs) {
        super(context, attrs);

        LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        layoutInflater.inflate(R.layout.actionbar, this);

        initView();
    }

    private void initView () {
        buttonSave = (ToggleButton) findViewById(R.id.actionbar_togglebutton_save);
        buttonBack = (ToggleButton) findViewById(R.id.actionbar_togglebutton_back);
        buttonHelp = (ToggleButton) findViewById(R.id.actionbar_togglebutton_help);
        textview = (TextView) findViewById(R.id.actionbar_textview);
        imageViewIcon = (ImageView) findViewById(R.id.actionbar_imageview_icon);
        buttonClear = (ToggleButton) findViewById(R.id.actionbar_togglebutton_clear);
        sepparator = (FrameLayout) findViewById(R.id.actionbar_sepparator);
    }

    public void setOnSaveButtonClickListener (OnClickListener listener) {
        buttonSave.setOnClickListener(listener);
    }

    public void setSaveButtonDrawable (Drawable d) {
        buttonSave.setBackgroundDrawable(d);
        buttonSave.setVisibility(View.VISIBLE);
    }

    public void setOnHelpButtonClickListener (OnClickListener listener) {
        buttonHelp.setOnClickListener(listener);
    }
    public void setHelpButtonDrawable (Drawable d) {
        buttonHelp.setBackgroundDrawable(d);
        buttonHelp.setVisibility(View.VISIBLE);
    }

    public void setOnBackButtonClickListener (OnClickListener listener) {
        buttonBack.setOnClickListener(listener);
    }

    public void setBackButtonDrawable (Drawable d) {
        buttonBack.setBackgroundDrawable(d);
        buttonBack.setVisibility(View.VISIBLE);
    }

    public void setClearButtonDrawable (Drawable d) {
        buttonClear.setBackgroundDrawable(d);
        buttonClear.setVisibility(View.VISIBLE);
    }

    public void setOnClearButtonClickListener (OnClickListener listener) {
        buttonClear.setOnClickListener(listener);
    }

    public void setTitle (String value) {
        textview.setText(value);
    }

    public void setIcon (int resId) {
        imageViewIcon.setImageDrawable(getResources().getDrawable(resId));
    }

    public void setOnIconClickListener (OnClickListener listener) {
        imageViewIcon.setOnClickListener(listener);
    }

    public void setSaveButtonChecked (boolean value) {
        buttonSave.setChecked(value);
    }

    public void setSeporatorVisible (int visibility) {
        sepparator.setVisibility(visibility);
    }

    public void setOnIconListener (OnClickListener listener) {
        imageViewIcon.setOnClickListener(listener);
    }
}

XML:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="60dp"
    android:background="@drawable/avtion_bar_bg" >


    <ToggleButton 
        android:id="@+id/actionbar_togglebutton_back"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:visibility="gone"
        android:background="@drawable/arrow_back_button_drawable"
        android:textOn=""
        android:textOff="" />

     <ImageView 
        android:id="@+id/actionbar_imageview_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:layout_toRightOf="@id/actionbar_togglebutton_back"
        android:layout_marginLeft="19.1dp"/>

    <TextView 
        android:id="@+id/actionbar_textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:textColor="@color/actionbar_text"
        android:textSize="16dp"
        android:layout_toRightOf="@id/actionbar_imageview_icon"
        android:layout_marginLeft="56.1dp" /> 

   <RelativeLayout 
       android:id="@+id/actionbar_relativelayout_saveconteiner"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentRight="true"
       android:layout_centerVertical="true">

       <ToggleButton 
           android:id="@+id/actionbar_togglebutton_save"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content" 
           android:visibility="gone"
           android:layout_alignParentRight="true"
           android:layout_centerVertical="true"
           android:background="@drawable/save_btn_drawable"
           android:textOn=""
           android:textOff=""/>

       <FrameLayout 
           android:id="@+id/actionbar_sepparator"
           android:layout_width="0.5dp"
           android:background="@color/white25transpert"
           android:layout_toLeftOf="@id/actionbar_togglebutton_save"
           android:layout_height="35dp"
           android:layout_centerInParent="true">     
       </FrameLayout>

       <ToggleButton 
           android:id="@+id/actionbar_togglebutton_clear"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content" 
           android:visibility="gone"
           android:layout_toLeftOf="@id/actionbar_sepparator"
           android:layout_marginRight="4dp"
           android:layout_centerVertical="true"
           android:background="@drawable/clear_button_drawable"
           android:textOn=""
           android:textOff=""/>

   </RelativeLayout> 

   <ToggleButton 
      android:id="@+id/actionbar_togglebutton_help"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content" 
      android:visibility="gone"
      android:layout_alignParentRight="true"
      android:layout_centerVertical="true"
      android:background="@drawable/save_btn_drawable"
      android:layout_marginRight="10dp"
      android:textOn=""
      android:textOff=""/>

</RelativeLayout>

祝你好运!