系出名门Android(7) - 控件(View)之ZoomControls, Include, VideoView, WebView, RatingBar, Tab - android

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系出名门Android(7) - 控件(View)之ZoomControls, Include, VideoView, WebView, RatingBar, Tab, Spinner, Chronometer, ScrollView

作者：webabcd

介绍
在 Android 中使用各种控件(View)

ZoomControls -放大/缩小按钮控件
Include -整合控件
VideoView -视频播放控件
WebView -浏览器控件
RatingBar -评分控件
Tab -选项卡控件
Spinner -下拉框控件
Chronometer -计时器控件
ScrollView -滚动条控件

1、ZoomControls 的 Demo
zoomcontrols.xml <? 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" >


< ZoomControls android:id ="@+id/zoomControls"
android:layout_width ="wrap_content" android:layout_height ="wrap_content" > </ ZoomControls >

</ LinearLayout > _ZoomControls.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;
import android.widget.ZoomControls;

public class _ZoomControls extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.zoomcontrols);

setTitle( "ZoomControls");

ZoomControls zoomControls = (ZoomControls) this.findViewById(R.id.zoomControls);
// setOnZoomInClickListener() - 响应单击放大按钮的事件
zoomControls.setOnZoomInClickListener( new OnClickListener() {
public void onClick(View v) {
Toast.makeText(_ZoomControls. this, "单击了放大按钮", Toast.LENGTH_SHORT).show();
}
});

// setOnZoomOutClickListener() - 响应单击缩小按钮的事件
zoomControls.setOnZoomOutClickListener( new OnClickListener() {
public void onClick(View v) {
Toast.makeText(_ZoomControls. this, "单击了缩小按钮", Toast.LENGTH_SHORT).show();
}
});

}
} 2、Include 的 Demo
include.xml <? 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" >


< include android:id ="@+id/cell1" layout ="@layout/include_1" />
< include android:id ="@+id/cell2" android:layout_width ="fill_parent" layout ="@layout/include_2" />

</ LinearLayout > include_1.xml <? xml version ="1.0" encoding ="utf-8" ?>
< TextView xmlns:android ="http://schemas.android.com/apk/res/android"
android:text ="TextView01" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" >
</ TextView > include_2.xml <? xml version ="1.0" encoding ="utf-8" ?>
< TextView xmlns:android ="http://schemas.android.com/apk/res/android"
android:text ="TextView02" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" >
</ TextView > _Include.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;

public class _Include extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.include);

setTitle( "Include");
}
} 3、VideoView 的 Demo
videoview.xml <? 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" >


< VideoView android:id ="@+id/videoView" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" >
</ VideoView >

</ LinearLayout > _VideoView.java package com.webabcd.view;

import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.widget.MediaController;
import android.widget.VideoView;

public class _VideoView extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.videoview);

setTitle( "VideoView");

VideoView videoView = (VideoView) findViewById(R.id.videoView);

// 指定需要播放的视频的地址
videoView.setVideoURI(Uri.parse( "android.resource://com.webabcd.view/" + R.raw.demo));
// videoView.setVideoPath();

// 设置播放器的控制条
videoView.setMediaController(new MediaController(this));
// 开始播放视频
videoView.start();
}
} 4、WebView 的 Demo
webview.xml <? 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" >


< WebView android:layout_width ="fill_parent"
android:layout_height ="wrap_content" android:id ="@+id/webView" />

</ LinearLayout > _WebView.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;

public class _WebView extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.webview);

setTitle( "WebView");

WebView webView = (WebView) findViewById(R.id.webView);

// 配置浏览器，使其可支持 JavaScript
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled( true);

// 清除浏览器缓存
webView.clearCache( true);
// 指定浏览器需要解析的 url 地址
webView.loadUrl( "http://webabcd.cnblogs.com/");
// 指定浏览器需要解析的 html 数据
// webView.loadData("<a href='http://webabcd.cnblogs.com/'>webabcd</a>", "text/html", "utf-8");
}
} 5、RatingBar 的 Demo
ratingbar.xml <? 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" >


< RatingBar android:id ="@+id/ratingBar" android:numStars ="5"
android:rating ="1.5" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" >
</ RatingBar >

< TextView android:id ="@+id/textView" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" />

</ LinearLayout > _RatingBar.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;
import android.widget.TextView;

public class _RatingBar extends Activity implements RatingBar.OnRatingBarChangeListener {

private RatingBar mRatingBar;
private TextView mTextView;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.ratingbar);

setTitle( "RatingBar");

mTextView = (TextView) findViewById(R.id.textView);
mRatingBar = (RatingBar) findViewById(R.id.ratingBar);

// setOnRatingBarChangeListener() - 响应评分值发生改变的事件
mRatingBar.setOnRatingBarChangeListener( this);
}

@Override
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
mTextView.setText(String.valueOf(rating));
}
} 6、Tab 的 Demo
tab.xml <? xml version ="1.0" encoding ="utf-8" ?>
< FrameLayout xmlns:android ="http://schemas.android.com/apk/res/android"
android:layout_width ="fill_parent" android:layout_height ="fill_parent" >


< TextView android:id ="@+id/view1" android:layout_width ="fill_parent"
android:layout_height ="fill_parent" android:text ="tab1 content" />


< TextView android:id ="@+id/view2" android:layout_width ="fill_parent"
android:layout_height ="fill_parent" android:text ="tab2 content" />

</ FrameLayout > _Tab.java package com.webabcd.view;

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.widget.TabHost;

// 实现 Tab 功能的话要继承 TabActivity
public class _Tab extends TabActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

TabHost tabHost = getTabHost();
LayoutInflater.from( this).inflate(R.layout.tab, tabHost.getTabContentView(), true);

// Tab 1 的内容
tabHost.addTab(tabHost.newTabSpec( "tab1")
.setIndicator( "tab1")
.setContent(R.id.view1));

// Tab 2 的内容（设置了 Tab 图片）
tabHost.addTab(tabHost.newTabSpec( "tab2")
.setIndicator( "tab2", getResources().getDrawable(R.drawable.icon01))
.setContent(R.id.view2));

// Tab 3 的内容（设置 Tab 的内容为指定的 Activity）
tabHost.addTab(tabHost.newTabSpec( "tab3")
.setIndicator( "tab3")
.setContent( new Intent( this, _TextView. class)));

}
} 7、Spinner 的 Demo
spinner.xml <? 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:layout_width ="fill_parent"
android:layout_height ="wrap_content" android:id ="@+id/textView" />


< Spinner android:id ="@+id/spinner" android:layout_width ="fill_parent"
android:layout_height ="wrap_content" />

</ LinearLayout > _Spinner.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class _Spinner extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.spinner);

setTitle( "Spinner");

Spinner spinner = (Spinner) findViewById(R.id.spinner);

// 设置下拉框控件的标题文本
spinner.setPrompt( "请选择");
// 实例化适配器，指定显示格式及数据源
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.colors, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);

// setOnItemSelectedListener() - 响应下拉框的选中值发生变化的事件
spinner.setOnItemSelectedListener( new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
TextView textView = (TextView)_Spinner. this.findViewById(R.id.textView);
textView.setText(((TextView)arg1).getText());
}

@Override
public void onNothingSelected(AdapterView<?> arg0) {

}
});
}
} 8、Chronometer 的 Demo
chronometer.xml <? 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" >


< Chronometer android:id ="@+id/chronometer"
android:layout_width ="wrap_content" android:layout_height ="wrap_content" />

< Button android:id ="@+id/btnStart" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" android:text ="开始计时" >
< requestFocus />
</ Button >

< Button android:id ="@+id/btnStop" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" android:text ="停止计时" >
</ Button >

< Button android:id ="@+id/btnReset" android:layout_width ="wrap_content"
android:layout_height ="wrap_content" android:text ="计时器复位" >
</ Button >

</ LinearLayout > _Chronometer.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Chronometer;

public class _Chronometer extends Activity {

private Chronometer mChronometer;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.chronometer);

setTitle( "Chronometer");

Button button;

mChronometer = (Chronometer) findViewById(R.id.chronometer);
// 设置计时器所显示的时间格式
mChronometer.setFormat( "计时：(%s)");

button = (Button) findViewById(R.id.btnStart);
button.setOnClickListener(mStartListener);

button = (Button) findViewById(R.id.btnStop);
button.setOnClickListener(mStopListener);

button = (Button) findViewById(R.id.btnReset);
button.setOnClickListener(mResetListener);
}

View.OnClickListener mStartListener = new OnClickListener() {
public void onClick(View v) {
// 启动计时器
mChronometer.start();
}
};

View.OnClickListener mStopListener = new OnClickListener() {
public void onClick(View v) {
// 暂停计时器
mChronometer.stop();
}
};

View.OnClickListener mResetListener = new OnClickListener() {
public void onClick(View v) {
// 复位计时器，即停止计时器
mChronometer.setBase(SystemClock.elapsedRealtime());
}
};
} 9、ScrollView 的 Demo
scrollview.xml <? 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" >


< ScrollView android:id ="@+id/scrollView"
android:layout_width ="fill_parent" android:layout_height ="200px"
android:scrollbarStyle ="outsideOverlay" android:background ="@android:drawable/edit_text" >
< TextView android:layout_width ="fill_parent"
android:layout_height ="wrap_content" android:id ="@+id/textView" />
</ ScrollView >

</ LinearLayout > _ScrollView.java package com.webabcd.view;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class _ScrollView extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.scrollview);

setTitle( "ScrollView");

TextView textView = (TextView) this.findViewById(R.id.textView);
textView.setText( "a\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na\na");
}
} OK
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系出名门Android(7) - 控件(View)之ZoomControls, Include, VideoView, WebView, RatingBar, Tab

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