android笔记01

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//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>

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