<!DOCTYPE html>
<!-- http://gmaps-samples-v3.googlecode.com/svn/trunk/drawing/drawing-tools.html -->
<!-- https://developers.google.com/maps/documentation/javascript/examples/places-searchbox -->
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="UTF-8">
<title>Drawing Tools (B)</title>
<!-- NOTE: two libraries to load are comma-separated; otherwise last mention of the query string arg overwrites the previous -->
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?sensor=false&v=3.21.5a&libraries=drawing&signed_in=true&libraries=places,drawing"></script>
<style type="text/css">
#map, html, body {
padding: 0;
margin: 0;
height: 100%;
}
#panel {
width: 200px;
font-family: Arial, sans-serif;
font-size: 13px;
float: right;
margin: 10px;
}
#color-palette {
clear: both;
}
.color-button {
width: 14px;
height: 14px;
font-size: 0;
margin: 2px;
float: left;
cursor: pointer;
}
#delete-button {
margin-top: 5px;
}
</style>
<script type="text/javascript">
var drawingManager;
var selectedShape;
var colors = ['#1E90FF', '#FF1493', '#32CD32', '#FF8C00', '#4B0082'];
var selectedColor;
var colorButtons = {};
function clearSelection() {
if (selectedShape) {
if (typeof selectedShape.setEditable == 'function') {
selectedShape.setEditable(false);
}
selectedShape = null;
}
curseldiv.innerHTML = "<b>cursel</b>:";
}
function updateCurSelText(shape) {
posstr = "" + selectedShape.position;
if (typeof selectedShape.position == 'object') {
posstr = selectedShape.position.toUrlValue();
}
pathstr = "" + selectedShape.getPath;
if (typeof selectedShape.getPath == 'function') {
pathstr = "[ ";
for (var i = 0; i < selectedShape.getPath().getLength(); i++) {
// .toUrlValue(5) limits number of decimals, default is 6 but can do more
pathstr += selectedShape.getPath().getAt(i).toUrlValue() + " , ";
}
pathstr += "]";
}
bndstr = "" + selectedShape.getBounds;
cntstr = "" + selectedShape.getBounds;
if (typeof selectedShape.getBounds == 'function') {
var tmpbounds = selectedShape.getBounds();
cntstr = "" + tmpbounds.getCenter().toUrlValue();
bndstr = "[NE: " + tmpbounds.getNorthEast().toUrlValue() + " SW: " + tmpbounds.getSouthWest().toUrlValue() + "]";
}
cntrstr = "" + selectedShape.getCenter;
if (typeof selectedShape.getCenter == 'function') {
cntrstr = "" + selectedShape.getCenter().toUrlValue();
}
radstr = "" + selectedShape.getRadius;
if (typeof selectedShape.getRadius == 'function') {
radstr = "" + selectedShape.getRadius();
}
curseldiv.innerHTML = "<b>cursel</b>: " + selectedShape.type + " " + selectedShape + "; <i>pos</i>: " + posstr + " ; <i>path</i>: " + pathstr + " ; <i>bounds</i>: " + bndstr + " ; <i>Cb</i>: " + cntstr + " ; <i>radius</i>: " + radstr + " ; <i>Cr</i>: " + cntrstr ;
}
function setSelection(shape, isNotMarker) {
clearSelection();
selectedShape = shape;
if (isNotMarker)
shape.setEditable(true);
selectColor(shape.get('fillColor') || shape.get('strokeColor'));
updateCurSelText(shape);
}
function deleteSelectedShape() {
if (selectedShape) {
selectedShape.setMap(null);
}
}
function selectColor(color) {
selectedColor = color;
for (var i = 0; i < colors.length; ++i) {
var currColor = colors[i];
colorButtons[currColor].style.border = currColor == color ? '2px solid #789' : '2px solid #fff';
}
// Retrieves the current options from the drawing manager and replaces the
// stroke or fill color as appropriate.
var polylineOptions = drawingManager.get('polylineOptions');
polylineOptions.strokeColor = color;
drawingManager.set('polylineOptions', polylineOptions);
var rectangleOptions = drawingManager.get('rectangleOptions');
rectangleOptions.fillColor = color;
drawingManager.set('rectangleOptions', rectangleOptions);
var circleOptions = drawingManager.get('circleOptions');
circleOptions.fillColor = color;
drawingManager.set('circleOptions', circleOptions);
var polygonOptions = drawingManager.get('polygonOptions');
polygonOptions.fillColor = color;
drawingManager.set('polygonOptions', polygonOptions);
}
function setSelectedShapeColor(color) {
if (selectedShape) {
if (selectedShape.type == google.maps.drawing.OverlayType.POLYLINE) {
selectedShape.set('strokeColor', color);
} else {
selectedShape.set('fillColor', color);
}
}
}
function makeColorButton(color) {
var button = document.createElement('span');
button.className = 'color-button';
button.style.backgroundColor = color;
google.maps.event.addDomListener(button, 'click', function() {
selectColor(color);
setSelectedShapeColor(color);
});
return button;
}
function buildColorPalette() {
var colorPalette = document.getElementById('color-palette');
for (var i = 0; i < colors.length; ++i) {
var currColor = colors[i];
var colorButton = makeColorButton(currColor);
colorPalette.appendChild(colorButton);
colorButtons[currColor] = colorButton;
}
selectColor(colors[0]);
}
/////////////////////////////////////
var map; //= new google.maps.Map(document.getElementById('map'), {
// these must have global refs too!:
var placeMarkers = [];
var input;
var searchBox;
var curposdiv;
var curseldiv;
function deletePlacesSearchResults() {
for (var i = 0, marker; marker = placeMarkers[i]; i++) {
marker.setMap(null);
}
placeMarkers = [];
input.value = ''; // clear the box too
}
/////////////////////////////////////
function initialize() {
map = new google.maps.Map(document.getElementById('map'), { //var
zoom: 12,//10,
center: new google.maps.LatLng(22.338,114.057),//(22.344, 114.048),
mapTypeId: google.maps.MapTypeId.ROADMAP,
disableDefaultUI: false,
zoomControl: true
});
curposdiv = document.getElementById('curpos');
curseldiv = document.getElementById('cursel');
var polyOptions = {
strokeWeight: 0,
fillOpacity: 0.45,
editable: true
};
// Creates a drawing manager attached to the map that allows the user to draw
// markers, lines, and shapes.
drawingManager = new google.maps.drawing.DrawingManager({
drawingMode: google.maps.drawing.OverlayType.POLYGON,
markerOptions: {
draggable: true,
editable: true,
},
polylineOptions: {
editable: true
},
rectangleOptions: polyOptions,
circleOptions: polyOptions,
polygonOptions: polyOptions,
map: map
});
google.maps.event.addListener(drawingManager, 'overlaycomplete', function(e) {
//~ if (e.type != google.maps.drawing.OverlayType.MARKER) {
var isNotMarker = (e.type != google.maps.drawing.OverlayType.MARKER);
// Switch back to non-drawing mode after drawing a shape.
drawingManager.setDrawingMode(null);
// Add an event listener that selects the newly-drawn shape when the user
// mouses down on it.
var newShape = e.overlay;
newShape.type = e.type;
google.maps.event.addListener(newShape, 'click', function() {
setSelection(newShape, isNotMarker);
});
google.maps.event.addListener(newShape, 'drag', function() {
updateCurSelText(newShape);
});
google.maps.event.addListener(newShape, 'dragend', function() {
updateCurSelText(newShape);
});
setSelection(newShape, isNotMarker);
//~ }// end if
});
// Clear the current selection when the drawing mode is changed, or when the
// map is clicked.
google.maps.event.addListener(drawingManager, 'drawingmode_changed', clearSelection);
google.maps.event.addListener(map, 'click', clearSelection);
google.maps.event.addDomListener(document.getElementById('delete-button'), 'click', deleteSelectedShape);
buildColorPalette();
//~ initSearch();
// Create the search box and link it to the UI element.
input = /** @type {HTMLInputElement} */( //var
document.getElementById('pac-input'));
map.controls[google.maps.ControlPosition.TOP_RIGHT].push(input);
//
var DelPlcButDiv = document.createElement('div');
//~ DelPlcButDiv.style.color = 'rgb(25,25,25)'; // no effect?
DelPlcButDiv.style.backgroundColor = '#fff';
DelPlcButDiv.style.cursor = 'pointer';
DelPlcButDiv.innerHTML = 'DEL';
map.controls[google.maps.ControlPosition.TOP_RIGHT].push(DelPlcButDiv);
google.maps.event.addDomListener(DelPlcButDiv, 'click', deletePlacesSearchResults);
searchBox = new google.maps.places.SearchBox( //var
/** @type {HTMLInputElement} */(input));
// Listen for the event fired when the user selects an item from the
// pick list. Retrieve the matching places for that item.
google.maps.event.addListener(searchBox, 'places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
for (var i = 0, marker; marker = placeMarkers[i]; i++) {
marker.setMap(null);
}
// For each place, get the icon, place name, and location.
placeMarkers = [];
var bounds = new google.maps.LatLngBounds();
for (var i = 0, place; place = places[i]; i++) {
var image = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
var marker = new google.maps.Marker({
map: map,
icon: image,
title: place.name,
position: place.geometry.location
});
placeMarkers.push(marker);
bounds.extend(place.geometry.location);
}
map.fitBounds(bounds);
});
// Bias the SearchBox results towards places that are within the bounds of the
// current map's viewport.
google.maps.event.addListener(map, 'bounds_changed', function() {
var bounds = map.getBounds();
searchBox.setBounds(bounds);
curposdiv.innerHTML = "<b>curpos</b> Z: " + map.getZoom() + " C: " + map.getCenter().toUrlValue();
}); //////////////////////
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="panel">
<div id="color-palette"></div>
<div>
<button id="delete-button">Delete Selected Shape</button>
</div>
<div id="curpos"></div>
<div id="cursel"></div>
<div id="note"><small>Note: markers can be selected, but are not graphically indicated; can be deleted, but cannot have their color changed.</small></div>
</div>
<input id="pac-input" type="text" placeholder="Search Box">
<div id="map">A</div>
</body>
</html>这是我的xml，我想以编程方式将右端infor_imageview设置为与text3对齐，我试图获取text3的边距，以便我可以将右端设置为text3，但无法这样做，请建议我该怎么做。首先，我想获取文本3的边距，然后我要在文本3的右端设置info_imageview。
答案 0 :(得分：1)
一个相对的布局会更好地使用ConstraintLayout或使用ConstraintLayout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp">
<TextView
android:id="@+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Text 1" />
<TextView
android:id="@+id/tv2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/tv1"
android:layout_toStartOf="@+id/iv1"
android:singleLine="true"
android:text="Text 2" />
<TextView
android:id="@+id/tv3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/tv2"
android:layout_toStartOf="@+id/iv1"
android:singleLine="true"
android:text="Text 3" />
<ImageView
android:id="@+id/iv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:src="@mipmap/ic_launcher" />
</RelativeLayout>
答案 1 :(得分：0)
仅是关于布局选择的建议，您可以使用ConstraintLayout，它提供一致且更多的自定义功能，以便始终按预期显示布局。当以不同的屏幕尺寸打开时，尤其是在您的情况下（右端与textview对齐），使用relativelayout可能会导致结果不同。
答案 2 :(得分：0)
如果您想始终使用LinearLayout，则可以这种方式使用。我删除了一些xml进行澄清。
注意重量。看起来在您的代码中您可能未正确使用权重。它是尺寸的比率。如果一个元素是权重1，另一个是权重2，则第一个元素的大小将是第二个元素的两倍。
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/info_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<TextView
android:id="@+id/text3"
android:layout_height="wrap_content"
android:layout_width="wrap_content" />
</LinearLayout>
<LinearLayout
android:id="@+id/info_arrow"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2">
<ImageView
android:id="@+id/info_imageview"
android:layout_height="wrap_content"
android:layout_width="wrap_content" />
</LinearLayout>
</LinearLayout>
答案 3 :(得分：0)
尝试一下：
左右对齐的3文本视图和左右显示图像视图，如下所示：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_marginTop="2dp"
android:layout_height="wrap_content">
<TextView
android:id="@+id/name_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="firstName" />
<TextView
android:id="@+id/lName_tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_below="@+id/name_tv"
android:singleLine="true"
android:text="LastName"
android:layout_toLeftOf="@+id/iv1" />
<TextView
android:id="@+id/tv3"
android:layout_width="match_parent"
android:layout_marginTop="5dp"
android:layout_height="wrap_content"
android:layout_below="@+id/lName_tv"
android:singleLine="true"
android:text="Email"
android:layout_toLeftOf="@+id/iv1" />
<ImageView
android:id="@+id/iv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"
android:layout_alignParentRight="true" />
</RelativeLayout>
答案 4 :(得分：0)
只需复制我的代码，然后检查您是否希望获得您期望的输出，就不要告诉我我还有另一个建议
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/card_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:orientation="vertical"
android:padding="12dp">
<TextView
android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:text="jkhdsfjkhj kljsdlf" />
<TextView
android:id="@+id/text2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="convert_to_voucher_message"
tools:text="Once you have 150 points, you can convert them to a voucher."/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/text3"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
tools:text="Final points collection this quarter: 21/1/17" />
<ImageView
android:id="@+id/info_Imageview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/icons_right" />
</LinearLayout>
</LinearLayout>
是的，您添加样式或图像是因为我正在使用我的图像并删除样式，所以