Titanium调用小技巧

1.复制粘贴技术

设置粘贴板的内容：

 

Titanium.UI.Clipboard.setText(source.value);

 获取粘贴板内容

 

	if (Titanium.UI.Clipboard.hasText()) {
		dest.value = Titanium.UI.Clipboard.getText();
	} else {
		alert('No text on clipboard.');
	}

2.JSON字符串的解析

 

JSON.parse(str)

   生成JSON字符串的方法

 

 JSON.stringify({title:'当前故障一览',type:4})

 

 3.设置属性

 

Ti.App.Properties.setString('servicePort', txtPort.value); 

 

 

    

   获取属性

 

Ti.App.Properties.getString('servicePort');

 4.base64加密

 

var data = "abcdefg";
var encoded = Ti.Utils.base64encode(data);

 

 base64解密

 

var encoded = Ti.Utils.base64decode(encoded.toString());

 SHA加密

 

var sha1 = Ti.Utils.sha1("abc");

 md5加密

 

Ti.Utils.md5HexDigest(data)

 

5.窗体大小

 

 

var button = Ti.UI.createButton({
	title : '',
	top: Ti.Platform.displayCaps.platformHeight/2-10,
	left:Ti.Platform.displayCaps.platformWidth/2-110,
	width : 100,
	height : 60
});

 

6.titanium相关平台的信息

 

var win = Titanium.UI.currentWindow;

// for battery level to work, you have to turn it
// on first otherwise it will report -1.  if you
// add a battery listener, it will turn it on for you
// automagically
var needUpdate = false;
Titanium.Platform.batteryMonitoring = true;
var batteryEventListener;

win.addEventListener('close',function()
{
	// turn it off, no need to waste the battery
	Titanium.Platform.batteryMonitoring = false;
	Titanium.Platform.removeEventListener('battery', batteryEventListener);
});

function batteryStateToString(state)
{
	switch (state)
	{
		case Titanium.Platform.BATTERY_STATE_UNKNOWN:
			return 'unknown';
		case Titanium.Platform.BATTERY_STATE_UNPLUGGED:
			return 'unplugged';
		case Titanium.Platform.BATTERY_STATE_CHARGING:
			return 'charging';
		case Titanium.Platform.BATTERY_STATE_FULL:
			return 'full';
	}
	return '???';
}

var l1 = Titanium.UI.createLabel({
	text:'name/osname:' + Titanium.Platform.name+'/'+Titanium.Platform.osname,
	top:10,
	left:10,
	width:'auto',
	font:{fontSize:14},
	color:'#777',
	height:'auto'
});

win.add(l1);

var l2 = Titanium.UI.createLabel({
	text:'model:' + Titanium.Platform.model,
	top:30,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l2);

var l3 = Titanium.UI.createLabel({
	text:'version:' + Titanium.Platform.version,
	top:50,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l3);

var l4 = Titanium.UI.createLabel({
	text:'architecture:' + Titanium.Platform.architecture,
	top:70,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l4);

var l5 = Titanium.UI.createLabel({
	text:'macaddress:' + Titanium.Platform.macaddress,
	top:90,
	left:10,
	width:'auto',
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l5);

var l6 = Titanium.UI.createLabel({
	text:'processor count:' + Titanium.Platform.processorCount,
	top:110,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l6);


var l7 = Titanium.UI.createLabel({
	text:'username:' + Titanium.Platform.username,
	top:130,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l7);

// NOTE: Needs to be tested on a physical device to get an accurate value;
// may select the wrong interface on non-mobile devices.
var l8 = Titanium.UI.createLabel({
	text:'address:' + Titanium.Platform.address,
	top:150,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l8);

var l9 = Titanium.UI.createLabel({
	text:'ostype:' + Titanium.Platform.ostype,
	top:170,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l9);

if (Titanium.Platform.batteryState == Ti.Platform.BATTERY_STATE_UNKNOWN) {
	needUpdate = true;
}

var l11 = Titanium.UI.createLabel({
	text:'battery state:' + batteryStateToString(Titanium.Platform.batteryState),
	top:190,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l11);

var l12 = Titanium.UI.createLabel({
	text:'battery level:' + Titanium.Platform.batteryLevel,
	top:210,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l12);

var l13 = Titanium.UI.createLabel({
	text:'display width-x-height:' + Titanium.Platform.displayCaps.platformWidth + 'x' + Titanium.Platform.displayCaps.platformHeight,
	top:230,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l13);

var l15 = Titanium.UI.createLabel({
	text:'display density:' + Titanium.Platform.displayCaps.density,
	top:250,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l15);

var l16 = Titanium.UI.createLabel({
	text:'display dpi:' + Titanium.Platform.displayCaps.dpi,
	top:270,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l16);

var l17 = Titanium.UI.createLabel({
	text:'available memory:' + Titanium.Platform.availableMemory,
	top:290,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l17);

var l18 = Titanium.UI.createLabel({
	text:'is24HourTimeFormat:' + Titanium.Platform.is24HourTimeFormat(),
	top:310,
	left:10,
	width:300,
	height:'auto',
	font:{fontSize:14},
	color:'#777'
});

win.add(l18);

var b = Titanium.UI.createButton({
	title:'Open URL',
	height:30,
	width:200,
	top:330
});
win.add(b);
var openURL=1;
b.addEventListener('click', function()
{
	var url;
	switch(openURL % 3)
	{
		case 0:
			url = 'http://www.google.com';
			b.title='Open URL (web)';
			break;
		case 1:
			url = 'tel:[phone]';
			b.title='Open URL (tel)';
			break;
		case 2:
			url = 'sms:4043332222';
			b.title='Open URL (sms)';
			break;
	}
	if (Titanium.Platform.name != 'android') {
		if (!Titanium.Platform.canOpenURL(url)) {
			Ti.API.warn("Can't open url: "+url);
		}
	}
	Titanium.Platform.openURL(url);
	openURL++;
});

//
// BATTERY STATE CHANGE EVENT
//
batteryEventListener = function(e)
{
	if (needUpdate) {
		l11.text = 'battery state:' + batteryStateToString(e.state);
		l12.text = 'battery level:' + e.level;
	} else {
		//TODO: based on various reports from the google, you only get battery state changes
		//at 5% intervals.... to test this, you gotta unplug and leave your phone sitting for awhile
		var message = 'Battery Notification\n\nLevel: ' + e.level + ', State: '+batteryStateToString(e.state);
		Titanium.UI.createAlertDialog({title:'Platform', message:message}).show();
	}
};
Titanium.Platform.addEventListener('battery', batteryEventListener);

Titanium.API.info("Current Phone Locale is "+Titanium.Platform.locale);
Titanium.API.info("OS name is " + Titanium.Platform.osname);
Titanium.API.info("Runtime: " + Titanium.Platform.runtime);

if (Titanium.Platform.osname == 'iphone' || Titanium.Platform.osname == 'ipad') {
	Titanium.API.info("Data network: " + Titanium.Platform.dataAddress);
	Titanium.API.info("Netmask: " + Titanium.Platform.netmask);
}

文件系统相关

var win = Titanium.UI.currentWindow;

// path variables
Titanium.API.info('Resources Directory :' + Titanium.Filesystem.resourcesDirectory);
Titanium.API.info('Temp Directory :' + Titanium.Filesystem.tempDirectory);
Titanium.API.info('Application Directory :' + Titanium.Filesystem.applicationDirectory);
Titanium.API.info('Application Data Directory :' + Titanium.Filesystem.applicationDataDirectory);
Titanium.API.info('Application Support Directory :' + Titanium.Filesystem.applicationSupportDirectory);

Titanium.API.info('External Storage Available :' + Titanium.Filesystem.isExternalStoragePresent());
Titanium.API.info('Separator :' + Titanium.Filesystem.separator);
Titanium.API.info('Line Ending :' + Titanium.Filesystem.lineEnding);


var f = Titanium.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory, 'text.txt');
Ti.API.info('file = ' + f);
var contents = f.read();
Ti.API.info("contents blob object = "+contents);
Ti.API.info('contents = ' + contents.text);
Ti.API.info('mime type = ' + contents.mimeType);
Ti.API.info('Blob\'s file = ' + contents.file);
Ti.API.info('nativePath = ' + f.nativePath);
Ti.API.info('Blob\'s file nativePath= ' + contents.file.nativePath);
Ti.API.info('exists = ' + f.exists());
Ti.API.info('size = ' + f.size);
Ti.API.info('readonly = ' + f.readonly);
Ti.API.info('symbolicLink = ' + f.symbolicLink);
Ti.API.info('executable = ' + f.executable);
Ti.API.info('hidden = ' + f.hidden);
Ti.API.info('writable = ' + f.writable);
Ti.API.info('name = ' + f.name);
Ti.API.info('extension = ' + f.extension());
Ti.API.info('resolve = ' + f.resolve());
Ti.API.info('created = ' + String(new Date(f.createTimestamp()))); // #2085 test

var dir = Titanium.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory);
Ti.API.info('directoryListing = ' + dir.getDirectoryListing());
Ti.API.info('getParent = ' + dir.getParent());
Ti.API.info('spaceAvailable = ' + dir.spaceAvailable());

var newDir = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,'mydir');
Ti.API.info("Created mydir: " + newDir.createDirectory());
Ti.API.info('newdir ' + newDir);
var newFile = Titanium.Filesystem.getFile(newDir.nativePath,'newfile.txt');
newFile.write(f.read());
Ti.API.info('directoryListing for newDir = ' + newDir.getDirectoryListing());
Ti.API.info("newfile.txt created: " + String(new Date(newFile.createTimestamp())));
Ti.API.info("newfile.txt modified: " + String(new Date(newFile.modificationTimestamp())));
Ti.API.info("newfile.txt renamed as b.txt: " + newFile.rename('b.txt'));

var renamedFile = Titanium.Filesystem.getFile(newDir.nativePath, 'b.txt');
Ti.API.info("newfile.txt deleted (expected to fail): " + newFile.deleteFile());
Ti.API.info("b.txt deleted: " + renamedFile.deleteFile());
Ti.API.info("mydir deleted: " + newDir.deleteDirectory());
Ti.API.info('directoryListing for newDir after deleteDirectory = ' + newDir.getDirectoryListing());

if (Ti.Platform.name == 'android') {
	var dir = Titanium.Filesystem.getFile(Titanium.Filesystem.externalStorageDirectory);
	Ti.API.info('external directoryListing = ' + dir.getParent().getDirectoryListing());
}

var l = Titanium.UI.createLabel({text:'Check Log for details', width:300, height:'auto', textAlign:'center'});
win.add(l);

// test to make sure we can still access compiled JS files
var jsfile = Titanium.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory,'app.js');
Ti.API.info("app.js exists? " + jsfile.exists());
Ti.API.info("app.js size? " + jsfile.size);

// test to make sure that #3385 is resolved - we can append files, blobs or strings to a file
// this will go away once Streams are fully integrated into the Filesystem API.

var testfile = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'text.txt');
Ti.API.info('text.txt exists? ' + testfile.exists());
Ti.API.info('text.txt size: ' + testfile.size + ' bytes');

if(!testfile.write("text written via write()\n")) {
	Ti.API.info("could not write string to file.");
}

if(!testfile.write(Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, 'text_two.txt'), true)) {
	Ti.API.info("could not append File object to file via write method.");
}

if(!testfile.write("\nText appended via write()", true)) {
	Ti.API.info("could not append string to file via write method.");
}

Ti.API.info("------------");
Ti.API.info("Test file contents:\n" + (testfile.read()).text);

//these should all fail
var bad_params = [10000, true, {}];
for(var i = 0, j = bad_params.length; i < j; i++) {
	if(!testfile.write(bad_params[i])) {
		Ti.API.info('Expected failure: (first parameter is "' + (typeof bad_params[i]) + '")');
	}
}