Android实训所学功能实现代码集合

MainActivity.java

package com.example.htcone;import android.net.Uri;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {private    Button btn;private EditText et1;private EditText et2;private Button btn1;private Button btn2;    @Override        protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btn=(Button)findViewById(R.id.loginin);        btn1=(Button)findViewById(R.id.telephone);        btn2=(Button)findViewById(R.id.message1);        et1=(EditText)findViewById(R.id.wenben1);        et2=(EditText)findViewById(R.id.wenben2);        btn.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubString username=et1.getText().toString();String password=et2.getText().toString();if(username.equals("sunrui")&&password.equals("123")){        Intent in=new Intent(MainActivity.this,SecondActivity.class);        startActivity(in);}}});        btn1.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent in2=new Intent();in2.setAction((Intent.ACTION_CALL));in2.setData(Uri.parse("tel:13869546209"));startActivity(in2);}});        btn2.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent in3=new Intent();in3.setAction(Intent.ACTION_SENDTO);in3.setData(Uri.parse("smsto:13869546209"));in3.putExtra("sms_body","have a good time");startActivity (in3);}});            }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    }

SecondActivity.java

package com.example.htcone;import java.util.ArrayList;import java.util.List;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.MenuItem;import android.widget.ArrayAdapter;import android.widget.ListView;public class SecondActivity extends Activity {private ListView uselv;//@OverrideList list;final static int menu_index=Menu.FIRST;final static int menu_content=Menu.FIRST+1;final static int menu_last=Menu.FIRST+2;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_second);uselv=(ListView)findViewById(R.id.tele);list=new ArrayList();list.add("Tom");list.add("Jerry");list.add("Ross");list.add("Monica");list.add("Racheal");list.add("Joey");ArrayAdapteradapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,list);uselv.setAdapter(adapter);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.//getMenuInflater().inflate(R.menu.second, menu);menu.add(0,menu_index,0,"首项").setIcon(android.R.drawable.btn_star);menu.add(0,menu_content,1,"内容").setIcon(android.R.drawable.btn_star);menu.add(0,menu_last,2,"尾页").setIcon(android.R.drawable.btn_star);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// TODO Auto-generated method stub//return super.onOptionsItemSelected(item);]switch(item.getItemId()){case menu_index:System.out.println("index");return true;case menu_content:System.out.println("content");return true;case menu_last:System.out.println("last");return true;}return false;}}

activity_main.xml

activity_second.xml

AndroidMainfest.xml

<?xml version="1.0" encoding="utf-8"?>               "

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