七个组件

Posted 2020-11-06 feng8026

package com.example.popup;

public class MainActivity extends Activity {  private PopupWindow pw;

 @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);  }  public void show(View v){   View view=View.inflate(this,R.layout.popup_window, null);   GridView gv = (GridView) view.findViewById(R.id.gv);   gv.setAdapter(new MyAdapter());   gv.setOnItemClickListener(new OnItemClickListener() {

   @Override    public void onItemClick(AdapterView<?> parent, View view,      int position, long id) {     // TODO Auto-generated method stub     pw.dismiss();    }   });   pw = new PopupWindow(view,     ViewGroup.LayoutParams.MATCH_PARENT,     ViewGroup.LayoutParams.WRAP_CONTENT);   /**    * 如果需要点击其他的地方泡泡自动消失有俩个条件    * 1.泡泡必须直定背景    * 2.泡泡必须获取焦点    */   pw.setBackgroundDrawable(new BitmapDrawable());   //显示   //pw.showAsDropDown(v);//指定在控件的下方出现   /**    * 显示在屏幕下方    * parent v是按钮， v.getParent式布局    * gravity  显示在布局中的什么位置    * x  水平偏移量    * y  垂直偏移量    */   pw.showAtLocation((View) v.getParent(), Gravity.BOTTOM, 0, 0);  }  class MyAdapter extends BaseAdapter{   private int[] images = new int[]{     R.drawable.i1,R.drawable.i2,     R.drawable.i3,R.drawable.i4,     R.drawable.i5,R.drawable.i6,     R.drawable.i7,R.drawable.i8,   };   private String[] names = new String[]{     "搜索","游戏","列表","查找","计算机","文件夹","一键加速","锁屏"   }; //   @Override   public int getCount() {    // TODO Auto-generated method stub    return images.length;   }

  @Override   public Object getItem(int position) {    // TODO Auto-generated method stub    return images[position];   }

 

  @Override   public long getItemId(int position) {    // TODO Auto-generated method stub    return position;   }

  @Override   public View getView(int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    if (convertView==null) {     convertView = View.inflate(MainActivity.this, R.layout.item, null);         }    ImageView iv_icon = (ImageView) convertView.findViewById(R.id.iv_icon);    TextView tv_name = (TextView) convertView.findViewById(R.id.tv_name);    iv_icon.setImageResource(images[position]);    tv_name.setText(names[position]);    return convertView;   }     } }

 

package com.example.text09;

 

public class MainActivity extends Activity {  private ExpandableListView expand_list;    public String[] groupStrings = {"西游记", "水浒传", "三国演义", "红楼梦"};    public String[][] childStrings = {      {"唐三藏", "孙悟空", "猪八戒", "沙和尚"},      {"宋江", "林冲", "李逵", "鲁智深"},      {"曹操", "刘备", "孙权", "诸葛亮", "周瑜"},      {"贾宝玉", "林黛玉", "薛宝钗", "王熙凤"} };

 @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);    expand_list = (ExpandableListView) findViewById(R.id.expand_list);     MyAdapter adapter =new MyAdapter();   expand_list.setAdapter(adapter);     //设置分组项的点击监听   expand_list.setOnGroupClickListener(new OnGroupClickListener() {      @Override   public boolean onGroupClick(ExpandableListView parent, View v,     int groupPosition, long id) {    Toast.makeText(getApplicationContext(), groupStrings[groupPosition], Toast.LENGTH_SHORT);    return false;   }  });   //设置子监听   expand_list.setOnChildClickListener(new OnChildClickListener() {      @Override   public boolean onChildClick(ExpandableListView parent, View v,     int groupPosition, int childPosition, long id) {    Toast.makeText(getApplicationContext(), childStrings[groupPosition][childPosition], Toast.LENGTH_SHORT);    return false;   }  });  }  class MyAdapter extends BaseExpandableListAdapter{   //获取分组的个数

  @Override   public int getGroupCount() {    // TODO Auto-generated method stub    return groupStrings.length;   } //获取指定分组中的子选项的个数   @Override   public int getChildrenCount(int groupPosition) {        return childStrings[groupPosition].length;   } //获取指定的分组数据   @Override   public Object getGroup(int groupPosition) {        return groupStrings[groupPosition];   } //获取指定分组中指定的子选项的数据   @Override   public Object getChild(int groupPosition, int childPosition) {        return childStrings[groupPosition][childPosition];   } //获取指定分组的ID   @Override   public long getGroupId(int groupPosition) {        return groupPosition;   } //获取指定分组下的子选项ID   @Override   public long getChildId(int groupPosition, int childPosition) {        return childPosition;   } //获取分组和子选项是否稳定的Id,也就是底层数据的改变会不影响到他们   @Override   public boolean hasStableIds() {        return true;   } //获取制定分组的视图   @Override   public View getGroupView(int groupPosition, boolean isExpanded,     View convertView, ViewGroup parent) {    GroupViewHolder groupViewHolder=null;    if (convertView==null) {     convertView = View.inflate(MainActivity.this, R.layout.item_expand, null);     groupViewHolder = new GroupViewHolder();     groupViewHolder.tvTitle= (TextView)convertView.findViewById(R.id.label_expand_group);     convertView.setTag(groupViewHolder);    }else{     groupViewHolder = (GroupViewHolder) convertView.getTag();    }    groupViewHolder.tvTitle.setText(groupStrings[groupPosition]);    return convertView;   } //获取指定分组中的指定   @Override   public View getChildView(int groupPosition, int childPosition,     boolean isLastChild, View convertView, ViewGroup parent) {    ChildViewHolder childViewHolder=null;    if (childViewHolder==null) {     convertView=View.inflate(MainActivity.this, R.layout.item_expand_group, null);     childViewHolder = new ChildViewHolder();     childViewHolder.tvTitle=(TextView) convertView.findViewById(R.id.label_expand_child);     convertView.setTag(childViewHolder);    }else{               childViewHolder = (ChildViewHolder) convertView.getTag();    }          childViewHolder.tvTitle.setText(childStrings[groupPosition][childPosition]);    return convertView;   }

     //        指定位置上的子元素是否可选中   @Override   public boolean isChildSelectable(int groupPosition, int childPosition) {        return true;   }}  

}  class GroupViewHolder {     TextView tvTitle; }  class ChildViewHolder {     TextView tvTitle; }

 

package com.example.text11_sindingdrawer;

import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView;

 

public class MyGridViewAdapter extends BaseAdapter{

 private Context context;  private String[] items;  private int[] icons;    public MyGridViewAdapter(Context context, String[] items, int[] icons){   this.context = context;   this.items = items;   this.icons = icons;  }    public int getCount() {   return items.length;  }

 public Object getItem(int arg0) {   return items[arg0];  }

 public long getItemId(int position) {   return position;  }

 public View getView(int position, View convertView, ViewGroup parent) {   LayoutInflater layoutInflater = LayoutInflater.from(context);   View view = (View)layoutInflater .inflate(R.layout.grid, null);   ImageView imageView = (ImageView)view.findViewById(R.id.image_view);   TextView textview = (TextView)view.findViewById(R.id.text_view);   imageView.setImageResource(icons[position]);   textview.setText(items[position]);   return view;  }

}

 

 

package com.example.text11_sindingdrawer;

import android.app.Activity; import android.content.res.Configuration; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.GridView; import android.widget.ImageView; import android.widget.SlidingDrawer;

public class MainActivity extends Activity {  private GridView gridView;  private SlidingDrawer slidingDrawer;  private ImageView imageView;  private int[] icons={   R.drawable.widget01, R.drawable.widget02,   R.drawable.widget03, R.drawable.widget04,   R.drawable.widget05, R.drawable.widget06  };    private String[] items={   "Phone", "Message", "AddImage", "Music", "Telephone", "SMS"   };

 @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);     gridView = (GridView)findViewById(R.id.mycontent);          slidingDrawer = (SlidingDrawer)findViewById(R.id.sd_main);          imageView = (ImageView)findViewById(R.id.my_image);          MyGridViewAdapter adapter = new MyGridViewAdapter(this, items, icons);          gridView.setAdapter(adapter);          slidingDrawer.setOnDrawerOpenListener(new SlidingDrawer.OnDrawerOpenListener() {          public void onDrawerOpened() {      imageView.setImageResource(R.drawable.right1);     }    });          slidingDrawer.setOnDrawerCloseListener(new SlidingDrawer.OnDrawerCloseListener() {          public void onDrawerClosed() {      imageView.setImageResource(R.drawable.left1);     }    });      }

  @Override   public void onConfigurationChanged(Configuration newConfig) {    super.onConfigurationChanged(newConfig);   }

 }

 

package com.example.text10_gallay;

import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView;

public class GalleryAdapter extends BaseAdapter {   private Context mContext;      //设置要展示的图片资源      int[] images = {R.drawable.f5,R.drawable.f6,R.drawable.f7};

     public GalleryAdapter(MainActivity mainActivity) {          this.mContext = mainActivity;      }

     @Override      public int getCount() {          return images.length;      }

     @Override      public Object getItem(int i) {          return i;      }

     @Override      public long getItemId(int i) {          return i;      }

     @Override      public View getView(int i, View view, ViewGroup viewGroup) {          //在此最好判断一下view是否为空          ImageView image = new ImageView(mContext);          image.setImageResource(images[i]);          image.setAdjustViewBounds(true);          //设置宽高          image.setLayoutParams(new Gallery.LayoutParams(                  ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));          return image;      }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingBottom="@dimen/activity_vertical_margin"     android:paddingLeft="@dimen/activity_horizontal_margin"     android:paddingRight="@dimen/activity_horizontal_margin"     android:paddingTop="@dimen/activity_vertical_margin"     tools:context="com.example.text10_gallay.MainActivity" >

   <Gallery         android:id="@+id/gallery"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_centerVertical="true"         android:layout_centerHorizontal="true" />

</RelativeLayout>

package com.example.text10_gallay;

import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.Gallery; import android.widget.Toast;

public class MainActivity extends Activity {

    GalleryAdapter galleryAdapter;

    @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         Gallery gallery = (Gallery) findViewById(R.id.gallery);         galleryAdapter = new GalleryAdapter(MainActivity.this);         gallery.setAdapter(galleryAdapter);         //相应的点击事件         gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {             @Override             public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {                 Toast.makeText(MainActivity.this, "您点击的是" + i, Toast.LENGTH_LONG).show();             }         });     }

}

  <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="下一步"
        android:background="@drawable/selector"/>
    <Spinner
        android:id="@+id/spinner"
         android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <AutoCompleteTextView
        android:id="@+id/actv_name"
         android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:completionThreshold="1"/>

package com.example.text08_theme;

import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.Spinner;

public class MainActivity extends Activity {  private Spinner spinner;  private AutoCompleteTextView actv_name;

 @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);      spinner = (Spinner) findViewById(R.id.spinner);   ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);   adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);   adapter.add("java");   adapter.add("python");   adapter.add("c++");   spinner.setAdapter(adapter);      actv_name=(AutoCompleteTextView) findViewById(R.id.actv_name);   String[] names = {"小西","小东","王宁","王楠","李四","李丽"};   ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,names);   actv_name.setAdapter(adapter2);  } }