package com.example.listtest;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {    TextView selection;    ListView list;        String[] items={"t0","t1","t2","t3","t4"};        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                //setListAdapter(new ArrayAdapter
     
      (this,android.R.layout.simple_list_item_1,items));                selection=(TextView)findViewById(R.id.textView1);        list=(ListView)findViewById(R.id.listView1);        //绑定数据        list.setAdapter(new ArrayAdapter
      
       (this,android.R.layout.simple_list_item_1,items));                list.setOnItemClickListener(new OnItemClickListener() {            public void onItemClick(AdapterView< ?> arg0, View arg1, int position,long id){                selection.setText(items[position]);            }        });    }        @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }  }
      
     

package com.example.test2;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.Spinner;import android.widget.TextView;public class MainActivity extends Activity {    TextView text;    Spinner sp;        private String[] items={"t0","t1","t2","t3","t4"};        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                text=(TextView)findViewById(R.id.textView1);        sp=(Spinner)findViewById(R.id.spinner1);               ArrayAdapter
     
       aa=new ArrayAdapter
      
       (this, android.R.layout.simple_spinner_item,items);        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);                sp.setAdapter(aa);                sp.setOnItemSelectedListener(new OnItemSelectedListener() {            public void onItemSelected(AdapterView< ?> parent, View v, int position, long id){                text.setText(items[position]);            }            public void onNothingSelected(AdapterView
        arg0) {                // TODO Auto-generated method stub                text.setText("Nothing selected!");            }        });    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }}
      
     

package com.example.test3;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.widget.GridView;import android.widget.TextView;public class MainActivity extends Activity {    TextView selection;    GridView grid;        String[] items={"t0","t1","t2","t3","t4","t5","t6","7t","t8","t9","t10","t11","t12","t13","t14","t15","t16","t17","t18","t19",};        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                selection=(TextView)findViewById(R.id.textView1);        grid=(GridView)findViewById(R.id.gridView1);                grid.setAdapter(new ArrayAdapter
     
      (this, android.R.layout.simple_list_item_1,items));        grid.setOnItemClickListener(new OnItemClickListener() {            public void onItemClick(AdapterView
       arg0, View arg1, int arg2,                    long arg3) {                // TODO Auto-generated method stub                selection.setText(items[arg2]);            }        });    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }}
     

package com.example.test5;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.MenuItem;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import android.widget.TextView;import android.support.v4.app.NavUtils;import android.text.Editable;import android.text.TextWatcher;public class MainActivity extends Activity implements TextWatcher{        TextView selection;    AutoCompleteTextView edit;        String[] items={"teacher","core","popular","wherese","compromise","teeth"};    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                selection=(TextView)findViewById(R.id.textView1);        edit=(AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);                edit.addTextChangedListener(this);        edit.setAdapter(new ArrayAdapter
     
      (this,android.R.layout.simple_dropdown_item_1line,items));    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }    public void afterTextChanged(Editable s) {        // TODO Auto-generated method stub            }    public void beforeTextChanged(CharSequence s, int start, int count,            int after) {        // TODO Auto-generated method stub            }    public void onTextChanged(CharSequence s, int start, int before, int count) {        // TODO Auto-generated method stub        selection.setText(edit.getText());    }    }