android笔记01

//获得控件

factorOne=(EditText)findViewById(R.id. factorOne);

//设置显示的string

calculate.setText(R.string.calculate);

//设置监听

calculate.setOnClickListener(new CalculateListrner());

 

监听类

        class CalculateListrner implements OnClickListener{

 

               @Override

               public void onClick(View v) {

                     String factorOneString= factorOne.getText().toString();

                     String factorTwoString= factorTwo.getText().toString();

                     

                     Intent intent= new Intent();

                     intent.putExtra( "one", factorOneString);

                     intent.putExtra( "two", factorTwoString);

                     intent.setClass(Activity03. this, ResultActivity.class);

                     

                     Activity03. this.startActivity(intent);

              }

 

    }

//添加菜单

        public boolean onCreatePanelMenu(int featureId, Menu menu) {

               // TODO Auto-generated method stub

       menu.add(0, 1, 1, R.string. exit );

       menu.add(0, 2, 2, R.string. about);

               return super .onCreatePanelMenu(featureId, menu);

       }

 

 

//菜单项处理

        public boolean onOptionsItemSelected(MenuItem item) {

               if(item.getItemId() == 1){

                     finish();

              }

               return super .onOptionsItemSelected(item);

       }

 

注册activity

          <activity

            android:name=".ResultActivity"

            android:label="@string/result"

            >

       

        </activity>

 

布局文件

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation= "vertical"

    android:layout_width= "fill_parent"

    android:layout_height= "fill_parent"

    >

     <TextView

         android:id="@+id/result"

         android:layout_width="fill_parent"

         android:layout_height="wrap_content"

         />

</LinearLayout>