欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

android 9.0 Launcher3 去掉抽屉式,显示所有 app

程序员文章站 2022-08-20 10:31:15
效果图 修改思路 1、增加全局控制变量 sys.launcher3.is_full_app ,用来动态切换 2、增加两套布局,对应有抽屉和无抽屉 3、去除 allAppsButton 4、将 AllAppsContainerView 中的图标加载到 Workspace 5、新安装的 app 自动添加 ......

效果图

android 9.0 Launcher3 去掉抽屉式,显示所有 app

修改思路

1、增加全局控制变量 sys.launcher3.is_full_app,用来动态切换

2、增加两套布局,对应有抽屉和无抽屉

3、去除 allappsbutton

4、将 allappscontainerview 中的图标加载到 workspace

5、新安装的 app 自动添加图标到 workspace

6、替换 workspace 图标长按删除选项为取消

7、屏蔽上拉显示抽屉页面手势

8、修改页面指示线为圆点

上代码

1、增加全局控制变量 sys.launcher3.is_full_app

1) 在 launcherappstate 中增加静态方法 isdisableallapps(), 通过修改 settings 中自定义的值 sys.launcher3.is_full_app

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\launcherappstate.java

   private static  context mcontext;

public static boolean isdisableallapps() {
        if (mcontext != null) {
            return settings.system.getint(mcontext.getcontentresolver(), 
                "sys.launcher3.is_full_app", 0) == 1;
        }
        return true;
    }

vendor\mediatek\proprietary\packages\apps\launcher3\androidmanifest-common.xml

2) androidmanifest-common.xml 中增加权限

<uses-permission android:name="android.permission.write_settings" />

3) 在 settingsactivity 中增加 switchpreference 用以动态修改 sys.launcher3.is_full_app

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\settingsactivity.java

在内部类 launchersettingsfragment 中重写 onpreferencetreeclick() 用以监听 switchpreference 点击

/**
     * this fragment shows the launcher preferences.
     */
    public static class launchersettingsfragment extends preferencefragment {
    
    .....
    
    @override
    public void oncreate(bundle savedinstancestate) {
            super.oncreate(savedinstancestate);

    ....

            //读取保存的值,初始化 switchpreference 的初始状态,是否选中
            int isfull = settings.system.getint(getactivity().getcontentresolver(), 
                "sys.launcher3.is_full_app", 0);
            log.d("launcher3", "sys.launcher3.is_full_app="+isfull);
            switchpreference fullswitch = (switchpreference) findpreference("pref_is_full_app");
            fullswitch.setchecked(isfull==1);
     }


    
    //add for change is_full_app value
    @override
    public boolean onpreferencetreeclick(preferencescreen preferencescreen, preference preference) {
            boolean result = true;
            final string key = preference.getkey();

             if ("pref_is_full_app".equals(key)) {
                boolean checked = ((switchpreference) preference).ischecked();

                settings.system.putint(getactivity().getcontentresolver(), "sys.launcher3.is_full_app",
                        checked ? 1 : 0);

                log.e("launcher3", "switchpreference checked="+checked);

                // value has changed
                progressdialog.show(getactivity(),
                        null /* title */,
                        getactivity().getstring(r.string.full_app_override_progress),
                        true /* indeterminate */,
                        false /* cancelable */);
                new looperexecutor(launchermodel.getworkerlooper()).execute(
                        new overrideapplyhandler(getactivity()));
                
            }
            return result;
        }

}

点击 switchpreference 后需要保存 sys.launcher3.is_full_app 新值,同时清除 launcher3 的缓存,延时启动并结束当前进程

清除缓存方法 clearapplicationuserdata 在 launcher3 中编译报错,所以通过发送广播到 setting 中进行真正的清缓存操作

    //add for change is_full_app value
    private static class overrideapplyhandler implements runnable {

        private final context mcontext;

        private overrideapplyhandler(context context) {
            mcontext = context;
        }

        @override
        public void run() {
            // clear the icon cache.
            launcherappstate.getinstance(mcontext).geticoncache().clear();

            // wait for it
            try {
                thread.sleep(1000);
            } catch (exception e) {
                log.e("launcher3", "error waiting", e);
            }

            // schedule an alarm before we kill ourself.
            intent homeintent = new intent(intent.action_main)
                    .addcategory(intent.category_home)
                    .setpackage(mcontext.getpackagename())
                    .addflags(intent.flag_activity_new_task);
            pendingintent pi = pendingintent.getactivity(mcontext, 42,
                    homeintent, pendingintent.flag_cancel_current | pendingintent.flag_one_shot);
            mcontext.getsystemservice(alarmmanager.class).setexact(
                    alarmmanager.elapsed_realtime, systemclock.elapsedrealtime() + 50, pi);

            //clear data will kill process
            intent intent = new intent("com.android.action.clear_app_data");
            intent.putextra("pkgname", "com.android.launcher3");
            intent.addflags(0x01000000);
            mcontext.sendbroadcast(intent);
            log.i("launcher3", "clearing user data com.android.launcher3");

            // kill process
            android.os.process.killprocess(android.os.process.mypid());
        }
    }

4) settingsactivity 对应的 xml 文件修改 launcher_preferences

vendor\mediatek\proprietary\packages\apps\launcher3\res\xml\launcher_preferences.xml

 <switchpreference
        android:key="pref_is_full_app"
        android:title="@string/is_full_app_title"
        android:summary="@string/is_full_app_desc"
        android:defaultvalue="false"
        android:persistent="true" />

对应的 string 文件就不贴了,自己增加下就行

2、增加两套布局,对应有抽屉和无抽屉

加载布局文件对应的 xml 为 vendor\mediatek\proprietary\packages\apps\launcher3\res\xml\device_profiles.xml

launcher3 通过获取 minwidthdps 和 minheightdps 来确定加载哪一个 profile,我的平板分辨率是 1280*800 的,增加两个 profile 节点

 <profile
        launcher:name="tablet"
        launcher:minwidthdps="376"
        launcher:minheightdps="586"
        launcher:numrows="4"
        launcher:numcolumns="5"
        launcher:numfolderrows="4"
        launcher:numfoldercolumns="5"
        launcher:iconsize="50"
        launcher:icontextsize="11"
        launcher:numhotseaticons="5"
        launcher:defaultlayoutid="@xml/default_workspace_tb_5x6"
        />

    <profile
        launcher:name="tablet_no_all_app"
        launcher:minwidthdps="380"
        launcher:minheightdps="590"
        launcher:numrows="4"
        launcher:numcolumns="5"
        launcher:numfolderrows="4"
        launcher:numfoldercolumns="5"
        launcher:iconsize="50"
        launcher:icontextsize="11"
        launcher:numhotseaticons="4"
        launcher:defaultlayoutid="@xml/default_workspace_tb_5x6_no_all_app"
        />

对应的你需要在 xml 文件下增加 4 个文件,分别是 default_workspace_tb_5x6.xml dw_hotseat_tb.xml default_workspace_tb_5x6_no_all_app.xml dw_hotseat_tb_no_all_app.xml

这样的好处是你可以自定义不同的布局文件加载内容,上面的配置含义简单说一下,分别是最小宽度、最小高度、布局的行和列、文件夹中布局行和列、图标大小、图标文字大小、hotseat 个数,加载的布局文件

在 invariantdeviceprofile() 判断是否需要加载 tablet_no_all_app profile

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\invariantdeviceprofile.java

public invariantdeviceprofile(context context) {

        windowmanager wm = (windowmanager) context.getsystemservice(context.window_service);
        display display = wm.getdefaultdisplay();
        displaymetrics dm = new displaymetrics();
        display.getmetrics(dm);

        point smallestsize = new point();
        point largestsize = new point();
        display.getcurrentsizerange(smallestsize, largestsize);

        // this guarantees that width < height
        minwidthdps = utilities.dpifrompx(math.min(smallestsize.x, smallestsize.y), dm);
        minheightdps = utilities.dpifrompx(math.min(largestsize.x, largestsize.y), dm);
        log.i("launcher3.profiles", "orignalminwidthdps="+minwidthdps + "  orignalminheightdps="+minheightdps);
        
        //add for load no_all_app xml
        if (launcherappstate.isdisableallapps()) {
            log.e("launcher3.profiles", "load no all app profiles");
            //对应 device_profiles.xml 中 tablet_no_all_app 的值
            minwidthdps = 380.0f;
            minheightdps = 590.0f;
        }
        .....
}

3、去除 allappsbutton

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\hotseat.java

将 resetlayout() 中 featureflags.no_all_apps_icon 替换为 launcherappstate.isdisableallapps()

void resetlayout(boolean hasverticalhotseat) {
        mcontent.removeallviewsinlayout();
        mhasverticalhotseat = hasverticalhotseat;
        invariantdeviceprofile idp = mlauncher.getdeviceprofile().inv;
        if (hasverticalhotseat) {
            mcontent.setgridsize(1, idp.numhotseaticons);
        } else {
            mcontent.setgridsize(idp.numhotseaticons, 1);
        }

        //if (!featureflags.no_all_apps_icon) {
        /// add for check is need allappbutton
        if (!launcherappstate.isdisableallapps()) {
            // add the apps button
            context context = getcontext();
            deviceprofile grid = mlauncher.getdeviceprofile();

        ...
}

4、将 allappscontainerview 中的图标加载到 workspace

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\model\loadertask.java

run() 中增加判断,添加 verifyapplications(), 修改 installshortcutreceiver 中 pendinginstallshortcutinfo 为 public

public void run() {
        synchronized (this) {
            // skip fast if we are already stopped.
            if (mstopped) {
                return;
            }
        }
        ....

        // second step
        tracehelper.partitionsection(tag, "step 2.1: loading all apps");
        loadallapps();

        //add for load all app on workspace
        if (launcherappstate.isdisableallapps()) {
            android.util.log.e("launcher3", "verifyapplications()");
            verifyapplications();
        }

        ....
}

 //add for load all app on workspace
private void verifyapplications() {
        final context context = mapp.getcontext();
        arraylist<pair<iteminfo, object>> installqueue = new arraylist<>();
        final list<userhandle> profiles = musermanager.getuserprofiles();
        for (userhandle user : profiles) {
            final list<launcheractivityinfo> apps = mlauncherapps.getactivitylist(null, user);
            arraylist<installshortcutreceiver.pendinginstallshortcutinfo> added = new arraylist<installshortcutreceiver.pendinginstallshortcutinfo>();
            synchronized (this) {
                for (launcheractivityinfo app : apps) {
                    installshortcutreceiver.pendinginstallshortcutinfo pendinginstallshortcutinfo = new installshortcutreceiver.pendinginstallshortcutinfo(app, context);
                    added.add(pendinginstallshortcutinfo);
                    installqueue.add(pendinginstallshortcutinfo.getiteminfo());
                }
            }
            if (!added.isempty()) {
                mapp.getmodel().addandbindaddedworkspaceitems(installqueue);
            }
        }
    }

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\model\basemodelupdatetask.java

注释 run() 中的 return

@override
    public final void run() {
        if (!mmodel.ismodelloaded()) {
            if (debug_tasks) {
                log.d(tag, "ignoring model task since loader is pending=" + this);
            }
            // loader has not yet run.
            //annotaion for load all app on workspace
            // return;
        }
        execute(mapp, mdatamodel, mallappslist);
    }

5、新安装的 app 自动添加图标到 workspace

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\model\packageupdatedtask.java

execute() 中增加判断,添加 updatetoworkspace()

public void execute(launcherappstate app, bgdatamodel datamodel, allappslist appslist) {

    ....

     final arraylist<appinfo> addedormodified = new arraylist<>();
    addedormodified.addall(appslist.added);
        
    //add for load new install app on workspace 
    if (launcherappstate.isdisableallapps()) {
        android.util.log.e("cczlauncher3", "updatetoworkspace()");
        updatetoworkspace(context, app, appslist);
    }
    
    ...
}

//add for load new install app on workspace
public void updatetoworkspace(context context, launcherappstate app , allappslist appslist){
         arraylist<pair<iteminfo, object>> installqueue = new arraylist<>();
        final list<userhandle> profiles = usermanagercompat.getinstance(context).getuserprofiles();
        arraylist<installshortcutreceiver.pendinginstallshortcutinfo> added 
        = new arraylist<installshortcutreceiver.pendinginstallshortcutinfo>();
        
        for (userhandle user : profiles) {
            final list<launcheractivityinfo> apps = launcherappscompat.getinstance(context).getactivitylist(null, user);
            synchronized (this) {
                for (launcheractivityinfo info : apps) {
                    for (appinfo appinfo : appslist.added) {
                        if(info.getcomponentname().equals(appinfo.componentname)){
                            installshortcutreceiver.pendinginstallshortcutinfo mpendinginstallshortcutinfo 
                            =  new installshortcutreceiver.pendinginstallshortcutinfo(info,context);
                            added.add(mpendinginstallshortcutinfo);
                            installqueue.add(mpendinginstallshortcutinfo.getiteminfo());
                        }
                    }
                }
            }
        }
        if (!added.isempty()) {
            app.getmodel().addandbindaddedworkspaceitems(installqueue);
        }
    }

6、替换 workspace 图标长按删除选项为取消

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\deletedroptarget.java

在 settextbasedondragsource() 、setcontroltypebasedondragsource()、onaccessibilitydrop() 中分别增加判断是否需要删除图标

private void settextbasedondragsource(iteminfo item) {
        if (!textutils.isempty(mtext)) {
            mtext = getresources().getstring(item.id != iteminfo.no_id
                    ? r.string.remove_drop_target_label
                    : android.r.string.cancel);
            //add for hide deletedroptarget
            if (launcherappstate.isdisableallapps()) {
                android.util.log.e("launcher3", "hide delete drop target");
                mtext = getresources().getstring(iscandrop(item)
                            ? r.string.remove_drop_target_label
                            : android.r.string.cancel);
            }

            requestlayout();
        }
    }

    private void setcontroltypebasedondragsource(iteminfo item) {
        mcontroltype = item.id != iteminfo.no_id ? controltype.remove_target
                : controltype.cancel_target;

        //add for hide deletedroptarget [s]
        if (launcherappstate.isdisableallapps()) {
            mcontroltype = iscandrop(item) ? controltype.remove_target
                : controltype.cancel_target;
        }        
    }

public void onaccessibilitydrop(view view, iteminfo item) {
        // remove the item from launcher and the db, we can ignore the containerinfo in this call
        // because we already remove the drag view from the folder (if the drag originated from
        // a folder) in folder.begindrag()
        //add if juge is need remove item from workspace
        if (!launcherappstate.isdisableallapps() || iscandrop(item)) {
            mlauncher.removeitem(view, item, true /* deletefromdb */);
            mlauncher.getworkspace().stripemptyscreens();
            mlauncher.getdraglayer()
                    .announceforaccessibility(getcontext().getstring(r.string.item_removed));
        }
}

private boolean iscandrop(iteminfo item){
        return !(item.itemtype == launchersettings.favorites.item_type_application ||
                item.itemtype == launchersettings.favorites.item_type_folder);
}

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\dragndrop\dragcontroller.java

drop() 中增加判断,取消当前拖拽操作

private void drop(droptarget droptarget, runnable flinganimation) {
    ....

    boolean accepted = false;
        if (droptarget != null) {
            droptarget.ondragexit(mdragobject);
            if (droptarget.acceptdrop(mdragobject)) {
                if (flinganimation != null) {
                    flinganimation.run();
                } else {
                    droptarget.ondrop(mdragobject, moptions);
                }
                accepted = true;

                //add for cancel canceldroptarget handle
                if (launcherappstate.isdisableallapps() && droptarget instanceof deletedroptarget &&
                        isneedcanceldrag(mdragobject.draginfo)) {
                    canceldrag();
                }
            }
        }
        ...
}

private boolean isneedcanceldrag(iteminfo item){
        return (item.itemtype == launchersettings.favorites.item_type_application ||
                item.itemtype == launchersettings.favorites.item_type_folder);
 }

7、屏蔽上拉显示抽屉页面手势

vendor\mediatek\proprietary\packages\apps\launcher3\quickstep\src\com\android\launcher3\uioverrides\overviewtoallappstouchcontroller.java

canintercepttouch() 中增加判断是否直接拦截

@override
    protected boolean canintercepttouch(motionevent ev) {
        //add for forbidden workspace drag change gradientview alph
        if (launcherappstate.isdisableallapps()){
            android.util.log.e("launcher3", "canintercepttouch()");
            return false;
        }  

        if (mcurrentanimation != null) {
            // if we are already animating from a previous state, we can intercept.
            return true;
        }
        if (abstractfloatingview.gettopopenview(mlauncher) != null) {
            return false;
        }
        if (mlauncher.isinstate(all_apps)) {
            // in all-apps only listen if the container cannot scroll itself
            return mlauncher.getappsview().shouldcontainerscroll(ev);
        } else if (mlauncher.isinstate(normal)) {
            return true;
        } else if (mlauncher.isinstate(overview)) {
            recentsview rv = mlauncher.getoverviewpanel();
            return ev.gety() > (rv.getbottom() - rv.getpaddingbottom());
        } else {
            return false;
        }
    }

8、修改页面指示线为圆点

vendor\mediatek\proprietary\packages\apps\launcher3\res\layout\launcher.xml

workspacepageindicator 改为 pageindicatordots

<com.android.launcher3.pageindicators.pageindicatordots
            android:id="@+id/page_indicator"
            android:layout_width="match_parent"
            android:layout_height="4dp"
            android:layout_gravity="bottom|center_horizontal"
            android:theme="@style/homescreenelementtheme" />

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\pageindicators\pageindicatordots.java

增加 pageindicatordots 继承 insettable,复写setinsets(), 调整圆点的位置

public class pageindicatordots extends view implements pageindicator, insettable {

// add for change workspacepageindicator line to dot
    @override
    public void setinsets(rect insets) {
        deviceprofile grid = mlauncher.getdeviceprofile();
        framelayout.layoutparams lp = (framelayout.layoutparams) getlayoutparams();

        if (grid.isverticalbarlayout()) {
            rect padding = grid.workspacepadding;
            lp.leftmargin = padding.left + grid.workspacecellpaddingxpx;
            lp.rightmargin = padding.right + grid.workspacecellpaddingxpx;
            lp.bottommargin = padding.bottom;
        } else {
            lp.leftmargin = lp.rightmargin = 0;
            lp.gravity = gravity.center_horizontal | gravity.bottom;
            lp.bottommargin = grid.hotseatbarsizepx + insets.bottom;
        }
        setlayoutparams(lp);
    }

    @override
    public void setscroll(int currentscroll, int totalscroll) {
        if (mnumpages > 1) {
            if (misrtl) {
                currentscroll = totalscroll - currentscroll;
            }
            int scrollperpage = totalscroll / (mnumpages - 1);

            // add for change workspacepageindicator line to dot
            if (scrollperpage == 0) {
                return;
            }
            int pagetoleft = currentscroll / scrollperpage;
            int pagetoleftscroll = pagetoleft * scrollperpage;
            int pagetorightscroll = pagetoleftscroll + scrollperpage;

        ...

}

vendor\mediatek\proprietary\packages\apps\launcher3\src\com\android\launcher3\states\springloadedstate.java

注释 setshouldautohide(),避免长按 workspace 时发生崩溃

@override
    public void onstateenabled(launcher launcher) {
        workspace ws = launcher.getworkspace();
        ws.showpageindicatoratcurrentscroll();
        //annotaion for workspacepageindicator line to dot
        // ws.getpageindicator().setshouldautohide(false);

        // prevent any un/installshortcutreceivers from updating the db while we are
        // in spring loaded mode
        installshortcutreceiver.enableinstallqueue(installshortcutreceiver.flag_drag_and_drop);
        launcher.getrotationhelper().setcurrentstaterequest(request_lock);
    }

    @override
    public void onstatedisabled(final launcher launcher) {
        //annotaion for workspacepageindicator line to dot
        // launcher.getworkspace().getpageindicator().setshouldautohide(true);

        // re-enable any un/installshortcutreceiver and now process any queued items
        installshortcutreceiver.disableandflushinstallqueue(
                installshortcutreceiver.flag_drag_and_drop, launcher);
    }

欢迎关注我的英文公众号【十句英文】,每日1首英文金曲+10句英文,伴你共同进步。

微信扫一扫下方二维码即可关注:

android 9.0 Launcher3 去掉抽屉式,显示所有 app