Android UI开发第六篇——仿QQ的滑动Tab
代码下载地址：http://www.devdiv.com/thread-101454-1-1.html 使用了ActivityGroup。 publicclassMainActivityextendsActivityGroup{ privateRelativeLayoutlayout; privateRelativeLayoutlayout1; privateRelativeLayoutlayout2; privateRelativeLayoutlayout3; privateRelativeLayoutbodylayout; privateImageViewtab1; privateImageViewtab2; privateImageViewtab3; privateImageViewfirst; privateintcurrent=1;//默认选中第一个，可以动态的改变此参数值 publicvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); initUI(); } privatevoidinitUI(){ layout=(RelativeLayout)findViewById(R.id.root); layout1=(RelativeLayout)findViewById(R.id.layout1); layout2=(RelativeLayout)findViewById(R.id.layout2); layout3=(RelativeLayout)findViewById(R.id.layout3); bodylayout=(RelativeLayout)findViewById(R.id.bodylayout); tab1=(ImageView)findViewById(R.id.tab1); tab1.setOnClickListener(onClickListener); tab2=(ImageView)findViewById(R.id.tab2); tab2.setOnClickListener(onClickListener); tab3=(ImageView)findViewById(R.id.tab3); tab3.setOnClickListener(onClickListener); RelativeLayout.LayoutParamsrl=newRelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT); rl.addRule(RelativeLayout.CENTER_IN_PARENT,RelativeLayout.TRUE); first=newImageView(this); first.setTag("first"); first.setImageResource(R.drawable.topbar_select); //默认选中项 switch(current){ case1: layout1.addView(first,rl); current=R.id.tab1; break; case2: layout2.addView(first,rl); current=R.id.tab2; break; case3: layout3.addView(first,rl); current=R.id.tab3; break; default: break; } Viewview=getLocalActivityManager().startActivity("index", newIntent(MainActivity.this,Tab1.class)) .getDecorView(); bodylayout.addView(view); } privatebooleanisAdd=false;//是否添加过top_select privateintselect_width;//top_select_width privateintselect_height;//top_select_height privateintfirstLeft;//第一次添加后的左边距***** privateintstartLeft;//起始左边距 //添加一个view，移除一个view privatevoidreplace(){ switch(current){ caseR.id.tab1: changeTop(layout1); break; caseR.id.tab2: changeTop(layout2); break; caseR.id.tab3: changeTop(layout3); break; default: break; } } privatevoidchangeTop(RelativeLayoutrelativeLayout){ ImageViewold=(ImageView)relativeLayout.findViewWithTag("first");; select_width=old.getWidth(); select_height=old.getHeight(); RelativeLayout.LayoutParamsrl=newRelativeLayout.LayoutParams(select_width,select_height); rl.leftMargin=old.getLeft()+((RelativeLayout)old.getParent()).getLeft(); rl.topMargin=old.getTop()+((RelativeLayout)old.getParent()).getTop(); //获取起始位置 firstLeft=old.getLeft()+((RelativeLayout)old.getParent()).getLeft(); ImageViewiv=newImageView(this); iv.setTag("move"); iv.setImageResource(R.drawable.topbar_select); layout.addView(iv,rl); relativeLayout.removeView(old); } privateOnClickListeneronClickListener=newOnClickListener(){ publicvoidonClick(Viewv){ if(!isAdd){ replace();//初次使用移除old添加新的top_select为RelativeLayout所使用 isAdd=true; } ImageViewtop_select=(ImageView)layout.findViewWithTag("move"); inttabLeft; intendLeft=0; booleanrun=false; switch(v.getId()){ caseR.id.tab1: if(current!=R.id.tab1){ //中心位置 tabLeft=((RelativeLayout)tab1.getParent()).getLeft()+tab1.getLeft()+tab1.getWidth()/2; //最终位置 endLeft=tabLeft-select_width/2; current=R.id.tab1; run=true; bodylayout.removeAllViews(); Viewview=getLocalActivityManager().startActivity("index", newIntent(MainActivity.this,Tab1.class)) .getDecorView(); bodylayout.addView(view); } break; caseR.id.tab2: if(current!=R.id.tab2){ tabLeft=((RelativeLayout)tab2.getParent()).getLeft()+tab2.getLeft()+tab2.getWidth()/2; endLeft=tabLeft-select_width/2; current=R.id.tab2; run=true; bodylayout.removeAllViews(); Viewview=getLocalActivityManager().startActivity("index", newIntent(MainActivity.this,Tab2.class)) .getDecorView(); bodylayout.addView(view); } break; caseR.id.tab3: if(current!=R.id.tab3){ tabLeft=((RelativeLayout)tab3.getParent()).getLeft()+tab3.getLeft()+tab3.getWidth()/2; endLeft=tabLeft-select_width/2; current=R.id.tab3; run=true; bodylayout.removeAllViews(); Viewview=getLocalActivityManager().startActivity("index", newIntent(MainActivity.this,Tab3.class)) .getDecorView(); bodylayout.addView(view); } break; default: break; } if(run){ TranslateAnimationanimation=newTranslateAnimation(startLeft,endLeft-firstLeft,0,0); startLeft=endLeft-firstLeft;//重新设定起始位置 animation.setDuration(400); animation.setFillAfter(true); top_select.bringToFront(); top_select.startAnimation(animation); } } }; } <?xmlversion="1.0"encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/root" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/default_bg" > <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="6.0" > <RelativeLayout android:id="@+id/layout1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1.0" android:layout_gravity="center_vertical" > <ImageView android:id="@+id/tab1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/tab1" android:layout_centerInParent="true" /> </RelativeLayout> <RelativeLayout android:id="@+id/layout2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1.0" android:layout_gravity="center_vertical" > <ImageView android:id="@+id/tab2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/tab2" android:layout_centerInParent="true" /> </RelativeLayout> <RelativeLayout android:id="@+id/layout3" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1.0" android:layout_gravity="center_vertical" > <ImageView android:id="@+id/tab3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/tab3" android:layout_centerInParent="true" /> </RelativeLayout> </LinearLayout> <RelativeLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1.0" android:background="#ffffff" android:gravity="center" android:id="@+id/bodylayout" > </RelativeLayout> </LinearLayout> </RelativeLayout> 本文转自xyz_lmn51CTO博客，原文链接：http://blog.51cto.com/xyzlmn/817371 ，如需转载请自行联系原作者
