【移動應(yīng)用開發(fā)技術(shù)】GridView的實(shí)現(xiàn)

【移動應(yīng)用開發(fā)技術(shù)】GridView的實(shí)現(xiàn)

代碼實(shí)現(xiàn)后界面如圖：一。xml文件1.<RelativeLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:id="@+id/relativelayout">

<TextView

android:id="@+id/text1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:text="當(dāng)前時間："

android:textSize="16dp"/><GridView

android:id="@+id/gv1"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:layout_above="@+id/text1"

android:columnWidth="90dp"

android:gravity="center"

android:horizontalSpacing="10dp"

android:numColumns="auto_fit"

android:stretchMode="spacingWidthUniform"

android:verticalSpacing="5dp"></GridView>

<TextView

android:id="@+id/text2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_alignParentBottom="true"

android:layout_toRightOf="@+id/text1"

android:text=""

android:textSize="16dp"/></RelativeLayout>（注text是當(dāng)前時間顯示，不用管，直接一個GridView即可）2.每個圖標(biāo)的xml<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="/apk/res/android"

android:id="@+id/item"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="vertical">

<ImageView

android:id="@+id/p_w_picpathview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:padding="4dp"

android:scaleType="fitXY"

android:layout_gravity="center"/>

<TextView

android:id="@+id/textview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:gravity="center_horizontal"/></LinearLayout>二。界面很簡單，下面是MainAcyivity代碼：1.publicclassMainActivityextendsActivity{

GridViewgridview;

PictureAdapteradapter;

publicstaticintcolorcolor=Color.WHITE;

int[]p_w_picpaths=newint[]{R.drawable.newdate,R.drawable.beiwang,R.drawable.newout,R.drawable.newin,R.drawable.alldate,R.drawable.allbeiwang,R.drawable.allout,R.drawable.allin,R.drawable.personmanager,R.drawable.game,R.drawable.chat,R.drawable.relax,R.drawable.seeitlogo,R.drawable.aboutflag,R.drawable.settings,R.drawable.out};

String[]titles=newString[]{"寫日記","寫備忘","新增支出","新增收入","我的日記","我的備忘","總支出","總收入","個人管理","游戲娛樂","聊天室","最簡瀏覽器","待開發(fā)。。。","關(guān)于我","系統(tǒng)設(shè)置","退出"};

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

gridview=(GridView)findViewById(R.id.gv1);

adapter=newPictureAdapter(titles,p_w_picpaths,this);

gridview.setAdapter(adapter);

gridview.setOnItemClickListener(newOnItemClickListener(){

@Override

publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,

longarg3){

Intentintent=null;

switch(arg2){

case0:intent=newIntent(MainActivity.this,newDate.class);

startActivity(intent);

finish();

break;

case1:intent=newIntent(MainActivity.this,newMark.class);

startActivity(intent);

finish();

break;

case2:intent=newIntent(MainActivity.this,newOut.class);

startActivity(intent);

finish();

break;

case3:intent=newIntent(MainActivity.this,newIn.class);

startActivity(intent);

finish();

break;

case4:intent=newIntent(MainActivity.this,allDate.class);

startActivity(intent);

finish();

break;

case5:intent=newIntent(MainActivity.this,allMark.class);

startActivity(intent);

finish();break;

case6:intent=newIntent(MainActivity.this,allOut.class);

startActivity(intent);

finish();

break;

case7:intent=newIntent(MainActivity.this,allIn.class);

startActivity(intent);

finish();

break;

case8:intent=newIntent(MainActivity.this,PersonManager.class);

startActivity(intent);

finish();

break;

case9:intent=newIntent(MainActivity.this,Game.class);

startActivity(intent);

finish();

break;

case10:intent=newIntent(MainActivity.this,Chat.class);

startActivity(intent);

finish();

break;

case11:intent=newIntent(MainActivity.this,WebGo.class);

startActivity(intent);

finish();

break;

case12:intent=newIntent(MainActivity.this,TabsFrame.class);

startActivity(intent);

finish();

break;

case13:intent=newIntent(MainActivity.this,Aboutauthor.class);

startActivity(intent);

finish();

break;

case14:MainActivity.this.openOptionsMenu();

break;

case15:showdialog(MainActivity.this);

break;

}

}

});}2.PictureAdapter類來自BaseAdapter自己寫：packagecom.example.licaizhuanjia;importjava.util.ArrayList;importjava.util.List;importandroid.content.Context;importandroid.graphics.Color;importandroid.view.LayoutInflater;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.BaseAdapter;importandroid.widget.ImageView;importandroid.widget.TextView;publicclassPictureAdapterextendsBaseAdapter{

privateList<Picture>pictures;

privateLayoutInflaterinflater;

publicstaticViewHoldervh;

publicPictureAdapter(String[]titles,int[]p_w_picpaths,Contextcontext){

super();

pictures=newArrayList<Picture>();

inflater=LayoutInflater.from(context);

for(inti=0;i<p_w_picpaths.length;i++){

Picturepicture=newPicture(titles[i],p_w_picpaths[i]);

pictures.add(picture);

}

}

publicintgetCount(){

//TODOAuto-generatedmethodstub

if(null!=pictures){

returnpictures.size();

}

else

return0;

}

@Override

publicObjectgetItem(intarg0){

//TODOAuto-generatedmethodstub

returnpictures.get(arg0);

}

@Override

publiclonggetItemId(intarg0){

//TODOAuto-generatedmethodstub

returnarg0;

}

@Override

publicViewgetView(intarg0,Viewarg1,ViewGrouparg2){

//TODOAuto-generatedmethodstub

if(arg1==null){

arg1=inflater.inflate(R.layout.gv1p_w_picpath,null);

vh=newViewHolder();

vh.title=(TextView)arg1.findViewById(R.id.textview);

vh.p_w_picpath=(ImageView)arg1.findViewById(R.id.p_w_picpathview);

arg1.setTag(vh);

}

else

vh=(ViewHolder)arg1.getTag();

vh.title.setText(pictures.get(arg0).getTitle());

settextcolor(MainActivity.colorcolor);

vh.p_w_picpath.setImageResource(pictures.get(arg0).getImage());

returnarg1;

}

publicstati