来源: 互联网  发布时间: 2014-02-18

textView背景颜色

textView添加阴影！

<?xml version="1.0" encoding="UTF-8"?>
<resources>
<style name="AudioFileInfoOverlayText">
    <item name="android:paddingLeft">4px</item>
    <item name="android:paddingBottom">4px</item>
    <item name="android:textColor">#ffffffff</item>
    <item name="android:textSize">12sp</item>
    <item name="android:shadowColor">#ffcccc</item>
    <item name="android:shadowDx">5</item>
    <item name="android:shadowDy">3</item>
    <item name="android:shadowRadius">6</item>
    </style>
 </resources>

 

 

main.xml

<TextView android:id="@+id/info"
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
      
       android:text="aaaa"
         android:gravity="center" />

    

    来源: 互联网  发布时间: 2014-02-18

Intent 常用的用法备忘
Intent
    应该算是Android中特有的东西。你可以在Intent中指定程序 要执行的动作（比如：view,edit,dial），以及程序执行到该动作时所需要的资料 。都指定好后，只要调用startActivity()，Android系统 会自动寻找最符合你指定要求的应用 程序，并执行该程序。

下面列出几种Intent 的用法
显示网页:

Uri uri = Uri.parse("http://www.google.com");
Intent it  = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
显示地图:

Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent it = new Intent(Intent.Action_VIEW,uri);
startActivity(it);
路径规划:

Uri uri = Uri.parse("http://maps.google.com/maps?f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
Intent it = new Intent(Intent.ACTION_VIEW,URI);
startActivity(it);
拨打电话:
调用拨号程序

Uri uri = Uri.parse("tel:xxxxxx");
Intent it = new Intent(Intent.ACTION_DIAL, uri);  
startActivity(it);  
Uri uri = Uri.parse("tel.xxxxxx");
Intent it =new Intent(Intent.ACTION_CALL,uri);
要使用这个必须在配置文件 中加入<uses-permission id="android .permission.CALL_PHONE" />
发送SMS/MMS
调用发送短信 的程序

Intent it = new Intent(Intent.ACTION_VIEW);   
it.putExtra("sms_body", "The SMS text");   
it.setType("vnd.android-dir/mms-sms");   
startActivity(it);  
发送短信

Uri uri = Uri.parse("smsto:0800000123");   
Intent it = new Intent(Intent.ACTION_SENDTO, uri);   
it.putExtra("sms_body", "The SMS text");   
startActivity(it);  
发送彩信

Uri uri = Uri.parse("content://media/external/images/media/23");   
Intent it = new Intent(Intent.ACTION_SEND);   
it.putExtra("sms_body", "some text");   
it.putExtra(Intent.EXTRA_STREAM, uri);   
it.setType("image/png");   
startActivity(it);
发送Email


Uri uri = Uri.parse("mailto:xxx@abc.com");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);
Intent it = new Intent(Intent.ACTION_SEND);   
it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");   
it.putExtra(Intent.EXTRA_TEXT, "The email body text");   
it.setType("text/plain");   
startActivity(Intent.createChooser(it, "Choose Email Client"));  
Intent it=new Intent(Intent.ACTION_SEND);     
String[] tos={"me@abc.com"};     
String[] ccs={"you@abc.com"};     
it.putExtra(Intent.EXTRA_EMAIL, tos);     
it.putExtra(Intent.EXTRA_CC, ccs);     
it.putExtra(Intent.EXTRA_TEXT, "The email body text");     
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");     
it.setType("message/rfc822");     
startActivity(Intent.createChooser(it, "Choose Email Client"));   
添加附件

Intent it = new Intent(Intent.ACTION_SEND);   
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");   
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");   
sendIntent.setType("audio/mp3");   
startActivity(Intent.createChooser(it, "Choose Email Client"));
播放 多媒体

  
Intent it = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/song.mp3");
it.setDataAndType(uri, "audio/mp3");
startActivity(it);
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");   
Intent it = new Intent(Intent.ACTION_VIEW, uri);   
startActivity(it);  
Uninstall 程序

Uri uri = Uri.fromParts("package", strPackageName, null);   
Intent it = new Intent(Intent.ACTION_DELETE, uri);   
startActivity(it);

uninstall apk
Uri uninstallUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);
install apk
Uri installUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);
play audio
Uri playUri = Uri.parse("file:///sdcard/download/everything.mp3");

returnIt = new Intent(Intent.ACTION_VIEW, playUri);
//发送附件
Intent it = new Intent(Intent.ACTION_SEND);  
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");  
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");  
sendIntent.setType("audio/mp3");  
startActivity(Intent.createChooser(it, "Choose Email Client"));
//搜索应用
Uri uri = Uri.parse("market://search?q=pname:pkg_name");  
Intent it = new Intent(Intent.ACTION_VIEW, uri);  
startActivity(it);  
//where pkg_name is the full package path for an application  

//显示指定应用的详细页面（这个好像不支持了，找不到app_id）
Uri uri = Uri.parse("market://details?id=app_id");  
Intent it = new Intent(Intent.ACTION_VIEW, uri);  
startActivity(it);  
//where app_id is the application ID, find the ID  
//by clicking on your application on Market home  
//page, and notice the ID from the address bar


本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/Android_Tutor/archive/2009/12/09/4974380.aspx

    

    来源: 互联网  发布时间: 2014-02-18

将navigationBar的返回按钮的title改为back
    很多时候我们使用navigationController时由于上一个navigationController.title的字符串太长，而导致下一个界面的返回按钮变的很长也很难看，为了美观我们我们可以把返回按钮的title改为back，或者是用自定义的图片。

    1.把返回按钮的title改为back：这里要特别说明一下，需要在上一个viewController里面写上以下代码。若是在当前viewController中无论你是用self.navigationItem.leftBarButtonItem.title = @"back"; 还是用self.navigationItem.backBarButtonItem.title = @"back"; 都不会修改返回按钮的title。代码如下：

- (void)back:(id)sender {
	[self.navigationController popViewControllerAnimated:YES];
}

 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        // 下一个界面的返回按钮
		UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init];
		temporaryBarButtonItem.title = @"back";
		temporaryBarButtonItem.target = self;
		temporaryBarButtonItem.action = @selector(back:);
		self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
		[temporaryBarButtonItem release];
    }
    return self;
}

    2.用自定义的图片修改返回按钮：

-(IBAction)backAction{
	[self.navigationController popViewControllerAnimated:YES];
}

 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        // Custom initialization
		UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
		backButton.frame = CGRectMake(0.0, 0.0, 40.0, 27.0);
		[backButton setImage:[UIImage imageNamed:@"Btn_Back_Off.png"] forState:UIControlStateNormal];
		[backButton setImage:[UIImage imageNamed:@"Btn_Back_On.png"] forState:UIControlStateSelected];
		[backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
		UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
		temporaryBarButtonItem.style = UIBarButtonItemStylePlain;
		self.navigationItem.leftBarButtonItem=temporaryBarButtonItem;
		[temporaryBarButtonItem release];		
    }
    return self;
}