android初学笔记，TextView及其派生组件的基本用法

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TextView的派生控件有: EditText/CheckBox/RadioButton/ToggleButton/Switch/以及和时间相关的AnalogClock/DigitalClock和倒计时控件Chronometer。初此之外还有AutoCompleteTextView和CheckedTextView。
Demo简单的包含了TextView和其派生控件的最基本用法。

package com.example.textviewdemo;import java.util.ArrayList;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.EditText;import android.widget.RadioGroup;import android.widget.Switch;import android.widget.ToggleButton;public class MainActivity extends Activity {    private EditText name;    private CheckBox apple, banana, orange;    private RadioGroup sex;    private Switch sexControl;    private ToggleButton favControl;    private Button submit;    //保存MainActivity中的数据    private ArrayList<String> content;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        content = new ArrayList<String>();        //通过ToggleButton和Switch控制Checkbox和RadioGroup的显示和隐藏。        sexControl.setOnCheckedChangeListener(new OnCheckedChangeListener() {            @Override            public void onCheckedChanged(CompoundButton buttonView,                    boolean isChecked) {                // TODO Auto-generated method stub                if (isChecked == false) {                    sex.setVisibility(View.INVISIBLE);                } else                    sex.setVisibility(View.VISIBLE);            }        });        favControl.setOnCheckedChangeListener(new OnCheckedChangeListener() {            @Override            public void onCheckedChanged(CompoundButton buttonView,                    boolean isChecked) {                // TODO Auto-generated method stub                if (isChecked == false) {                    apple.setVisibility(View.INVISIBLE);                    banana.setVisibility(View.INVISIBLE);                    orange.setVisibility(View.INVISIBLE);                    favControl.setText("显示");                } else {                    apple.setVisibility(View.VISIBLE);                    banana.setVisibility(View.VISIBLE);                    orange.setVisibility(View.VISIBLE);                    favControl.setText("隐藏");                }            }        });        final Intent intent = new Intent(MainActivity.this, ShowActivity.class);        submit.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                // TODO Auto-generated method stub                content.add(name.getText().toString());                if (apple.isChecked())                    content.add("苹果");                if (banana.isChecked())                    content.add("香蕉");                if (orange.isChecked())                    content.add("橘子");                int id = sex.getCheckedRadioButtonId();                if (id == R.id.radio0)                    content.add("男人");                else                    content.add("女人");                Bundle data = new Bundle();                if (content.size() > 0) {                    data.putSerializable("bundle_data", content);                    intent.putExtras(data);                    startActivity(intent);                }            }        });    }    private void initView() {        name = (EditText) this.findViewById(R.id.editText1);        apple = (CheckBox) this.findViewById(R.id.checkBox1);        banana = (CheckBox) this.findViewById(R.id.checkBox2);        orange = (CheckBox) this.findViewById(R.id.checkBox3);        sex = (RadioGroup) this.findViewById(R.id.radioGroup1);        sexControl = (Switch) this.findViewById(R.id.switch1);        favControl = (ToggleButton) this.findViewById(R.id.toggleButton1);        submit = (Button) this.findViewById(R.id.button1);    }}

package com.example.textviewdemo;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.os.SystemClock;import android.widget.AnalogClock;import android.widget.ArrayAdapter;import android.widget.Chronometer;import android.widget.Chronometer.OnChronometerTickListener;import android.widget.ListView;public class ShowActivity extends Activity {    private Chronometer ch;    private AnalogClock clock;    private ListView list;    @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_show);        initView();        ch.setBase(SystemClock.elapsedRealtime());        ch.start();        ch.setOnChronometerTickListener(new OnChronometerTickListener() {            @Override            public void onChronometerTick(Chronometer ch) {                // TODO Auto-generated method stub                if (SystemClock.elapsedRealtime() - ch.getBase() > 10 * 1000) {                        ch.stop();                }            }        });        Bundle data = getIntent().getExtras();        List<String> content = (List<String>) data                .getSerializable("bundle_data");        ArrayAdapter adapter = new ArrayAdapter(this,                android.R.layout.simple_list_item_1, content);        list.setAdapter(adapter);    }    private void initView() {        ch = (Chronometer) this.findViewById(R.id.chronometer1);        clock = (AnalogClock) this.findViewById(R.id.analogClock1);        list = (ListView) this.findViewById(R.id.listView1);    }}

<RelativeLayout xmlns:tools="http://schemas.android.com/tools"    xmlns:android="http://schemas.android.com/apk/res/android"    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.textviewdemo.MainActivity" >    <EditText        android:id="@+id/editText1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/textView1"        android:layout_centerHorizontal="true"        android:layout_marginTop="22dp"        android:ems="10"        android:hint="@string/info" />    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:text="@string/inputName"        android:textAppearance="?android:attr/textAppearanceLarge" />    <RadioGroup        android:id="@+id/radioGroup1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignRight="@+id/editText1"        android:layout_below="@+id/editText1"        android:layout_marginTop="30dp" >        <RadioButton            android:id="@+id/radio0"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="@string/man" />        <RadioButton            android:id="@+id/radio1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="@string/woman" />    </RadioGroup>    <CheckBox        android:id="@+id/checkBox1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/editText1"        android:layout_below="@+id/editText1"        android:layout_marginTop="22dp"        android:text="@string/apple" />    <CheckBox        android:id="@+id/checkBox2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/editText1"        android:layout_below="@+id/checkBox1"        android:text="@string/banana" />    <CheckBox        android:id="@+id/checkBox3"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/editText1"        android:layout_below="@+id/checkBox2"        android:text="@string/orange" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="26dp"        android:text="@string/submit" />    <ToggleButton        android:id="@+id/toggleButton1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/radioGroup1"        android:layout_below="@+id/radioGroup1"        android:layout_marginTop="41dp"        android:checked="true"        android:text="@string/onOff" />    <Switch        android:id="@+id/switch1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignBaseline="@+id/toggleButton1"        android:layout_alignBottom="@+id/toggleButton1"        android:layout_alignRight="@+id/button1"        android:checked="true" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <ListView        android:id="@+id/listView1"        android:layout_width="match_parent"        android:layout_height="286dp" >    </ListView>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content" >        <AnalogClock            android:id="@+id/analogClock1"            android:layout_width="wrap_content"            android:dial="@drawable/pan"            android:hand_hour="@drawable/point"            android:hand_minute="@drawable/point"            android:layout_height="wrap_content" />        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="match_parent"            android:orientation="vertical" >            <Chronometer                android:id="@+id/chronometer1"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="@string/Chronometer" />        </LinearLayout>    </LinearLayout></LinearLayout>

MainActivity
ShowActivity

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