Android 学习1----控件的学习

上述1,2,3,4的演示代码,包含activity代码和xml代码
activity代码
package com.example.helloworldtext;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener{

public Button loginButton;
private Button button2,button3,button4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
* 1.初始化当前所需要的控件
* 通过findViewById()方法初始化当前控件
* findViewById()方法返回的是View对象,需要向下转型为Button对象
*
* 2.设置Button的监听器
*/
loginButton = (Button)findViewById(R.id.button1);

loginButton.setOnClickListener(new OnClickListener() {

/*
* 第一种方法:匿名内部类
*/
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
System.out.println("我的Button被点击了");
}
});
button2 = (Button)findViewById(R.id.button2);
button3 = (Button)findViewById(R.id.button3);
button4 = (Button)findViewById(R.id.button4);

button2.setOnClickListener(new MyOnClickListener(){
@Override
public void onClick(View arg0){
super.onClick(arg0);
Toast.makeText(MainActivity.this, "button2 要执行的逻辑", 1).show();
}
});
button3.setOnClickListener(new MyOnClickListener(){
@Override
public void onClick(View arg0){
super.onClick(arg0);
Toast.makeText(MainActivity.this, "button3 要执行的逻辑", 1).show();
}
});
button4.setOnClickListener(this);
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.i("tag", "第四种方式");
}
}
class MyOnClickListener implements OnClickListener{

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.i("tag", "父类的onclick事件");
}

}

xml代码
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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=".MainActivity" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="@string/yourName"
android:textColor="#00ff00"
android:textSize="28sp" />

<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/textView1"
android:layout_toRightOf="@+id/textView1"
android:ems="10"
android:hint="@string/hintName"
android:inputType="textPersonName"
android:textSize="24sp" >

<requestFocus />
</EditText>

<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/buttunName"
android:background="#ff3300"/>

<Button
android:id="@+id/button3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_alignParentBottom="true"
android:text="按钮3" />

<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/button3"
android:layout_alignLeft="@+id/button3"
android:text="按钮2" />

<Button
android:id="@+id/button4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginTop="14dp"
android:text="按钮4" />

<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/editText1"
android:layout_below="@+id/editText1"
android:background="@drawable/ic_launcher" />

<!-- 实现文本的跑马灯效果

android:ellipsize="marquee"
android:focusable="true"
android:focusableInTouchMode="true"
android:singleLine="true"
-->

<com.example.helloworldtext.MarQueeTextView
android:id="@+id/textView2"

android:ellipsize="marquee"
android:focusable="true"
android:focusableInTouchMode="true"
android:singleLine="true"

android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/imageView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="18dp"
android:text="我是一个TextView,我是一个TextView,我是一个TextView" />

<com.example.helloworldtext.MarQueeTextView
android:id="@+id/textView3"
android:ellipsize="marquee"
android:focusable="true"
android:focusableInTouchMode="true"
android:singleLine="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView2"
android:layout_below="@+id/textView2"
android:layout_marginTop="16dp"
android:text="我是一个TextView,我是一个TextView,我是一个TextView" />

</RelativeLayout>

上述5的演示代码,包含activity代码和xml代码
activity代码
package com.example.demon1;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.MultiAutoCompleteTextView;

public class MainActivity extends Activity {

private AutoCompleteTextView acTextView;
private MultiAutoCompleteTextView macTextView;

private String [] res = {"android1","android2","anroid3",
"beijing1","beijing2","beijing3",
"shanghai1","shanghai2","shnghai3"};
/*
* 第一步:初始化控件
* 第二步:构造适配器
* 第三步:初始化数据源---用来与当前的输入相匹配
* 第四步:将适配器与当前的控件相绑定
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*第一步*/
acTextView = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);
ArrayAdapter<String> adapter  = /*第二步*/new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,/*第三步*/ res);
/*第四步*/
acTextView.setAdapter(adapter);
/*
* 第一步:初始化控件
* 第二步:需要一个适配器
* 第三步:初始化数据源与输入的数据相匹配
* 第四步:将当前控件与适配器绑定
* 第五步:设置分隔符
*/
macTextView = (MultiAutoCompleteTextView)findViewById(R.id.multiAutoCompleteTextView1);
macTextView.setAdapter(adapter);
macTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());

}
}

xml代码
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<AutoCompleteTextView
android:id="@+id/autoCompleteTextView1"
android:completionThreshold="3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入查询单字符串" >
<requestFocus />
</AutoCompleteTextView>

<MultiAutoCompleteTextView
android:id="@+id/multiAutoCompleteTextView1"
android:completionThreshold="2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="输入收件人" />

</LinearLayout>

上述6的演示代码,包含activity代码和xml代码
activity代码
package com.example.demo2;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ToggleButton;

public class MainActivity extends Activity implements OnCheckedChangeListener{

private ToggleButton tb;
private ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
* 1.初始化控件
* 2.设置监听器
*/
tb = (ToggleButton)findViewById(R.id.toggleButton1);
img = (ImageView)findViewById(R.id.imageView1);

tb.setOnCheckedChangeListener(this);

}
@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
img.setBackgroundResource(arg1?R.drawable.on:R.drawable.off);
}
}

xml代码
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ToggleButton
android:id="@+id/toggleButton1"
android:textOff="关"
android:textOn="开"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>

<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>

</LinearLayout>

上述7,8的演示代码,包含activity代码和xml代码
activity代码
package com.example.demon3;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.CheckBox;
import android.widget.Checkable;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioButton;
import android.widget.RadioGroup;

public class MainActivity extends Activity implements android.widget.RadioGroup.OnCheckedChangeListener{
private CheckBox check;
private RadioGroup rg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

check = (CheckBox)findViewById(R.id.checkBox1);
check.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
if(arg1){
Log.i("tag", "已婚");
}
}
});

rg = (RadioGroup)findViewById(R.id.radioGroup1);
rg.setOnCheckedChangeListener(this);

}
@Override
public void onCheckedChanged(RadioGroup arg0, int arg1) {
// TODO Auto-generated method stub
switch(arg1){
case R.id.radio0:
Log.i("tag", "男");
break;
case R.id.radio1:
Log.i("tag","女");
break;
}
}
}

xml代码
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false"
android:text="已婚" />

<RadioGroup
android:id="@+id/radioGroup1"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<RadioButton
android:id="@+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="男" />

<RadioButton
android:id="@+id/radio1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女" />

</RadioGroup>

</LinearLayout>