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Android13 Hotseat客制化--去掉hotseat（热座）

article 2024/12/27 12:11:15

需求：有些项目不要热座，要求去掉热座

以前的做法是把DeviceProfile里与hotseat有关的变量改为0之类的，改动比较大。为什么不通过简单的把mHotseat设置为GONE呢

因为在各种视图变化的时候，会把hotseat再次显示出来，因此尝试新的方法来实现。

step1:把hotseat默认改为GONE 在launcher.xml里把hotseat设为gone

<!--Kevin.Ye set hotseat as gone-->
<include
android:id="@+id/hotseat"
layout="@layout/hotseat"
android:visibility="gone"/>

step2:为了兼容其他项目需要保留hotseat的功能，在FeatureFlag.java中添加flag

public static final boolean REMOVE_HOTSEAT = true;//Kevin.Ye added for removing hotseat

step3：在Launcher.java里的setupViews(),把mHotseat设为GONE

/**
     * Finds all the views we need and configure them properly.
     */
    protected void setupViews() {
        mDragLayer = findViewById(R.id.drag_layer);
        mFocusHandler = mDragLayer.getFocusIndicatorHelper();
        mWorkspace = mDragLayer.findViewById(R.id.workspace);
        mWorkspace.initParentViews(mDragLayer);
        mOverviewPanel = findViewById(R.id.overview_panel);
        mHotseat = findViewById(R.id.hotseat);
        mHotseat.setWorkspace(mWorkspace);
        mHotseatController = new HotseatController(this.getApplicationContext(),this);//Kevin.Ye
        if(FeatureFlags.REMOVE_HOTSEAT)
            mHotseat.setVisibility(View.GONE);//Kevin.Ye added for removing hotseat
        // Setup the drag layer
        mDragLayer.setup(mDragController, mWorkspace);

setup4:在Hotseat.java中的onVisibilityAggregated屏蔽所有的setVisibility操作，也许前面的步骤也不需要！不确定

@Override
public void onVisibilityAggregated(boolean isVisible) {
   super.onVisibilityAggregated(isVisible);
   if(getVisibility() != View.GONE)//Kevin.Ye added for set hotseat always GONE!
   setVisibility(View.GONE);
   if (mOnVisibilityAggregatedCallback != null) {
   mOnVisibilityAggregatedCallback.accept(isVisible);
   }
}

step5: Workspace.java中不要允许hotseat作为拖拽图标的目的Layout

private boolean shouldUseHotseatAsDropLayout(DragObject dragObject) {
        if(FeatureFlags.REMOVE_HOTSEAT) return false;//Kevin.Ye not allow hotseat as dragTarget
        if(mLauncher.getHotseatContainer().getVisibility() != View.VISIBLE) return false;//Kevin.Ye added for not allow drag to hotseat
        if (mLauncher.getHotseat() == null
                || mLauncher.getHotseat().getShortcutsAndWidgets() == null
                || isDragWidget(dragObject)) {
            return false;
        }
        View hotseatShortcuts = mLauncher.getHotseat().getShortcutsAndWidgets();
        getViewBoundsRelativeToWorkspace(hotseatShortcuts, mTempRect);
        return mTempRect.contains(dragObject.x, dragObject.y);
    }

step6: WorkspacePageIndicator.java里的setInsets接口修改一下，不要影响页面指示器的位置

 
            if(FeatureFlags.REMOVE_HOTSEAT)
                lp.bottomMargin = insets.bottom;//there is no hotseatBarSize
            else
                lp.bottomMargin = grid.hotseatBarSizePx + insets.bottom;
            
            lp.bottomMargin = insets.bottom + mMarginBottom;
            //Kevin.Ye modified end
        }
        setLayoutParams(lp);

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