系出名门Android(7) - 控件(View)之ZoomControls, Include... - android

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
代码
<?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
代码
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
代码
<?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
代码
<?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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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
代码
<?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
代码
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

系出名门Android(7) - 控件(View)之ZoomControls, Include...

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