Intent Uri 的组成部分
intent Uri 以 intent:// 开头，以 end结尾 ，主要分为以下几个部分，每个部分之间通过 ; 进行分隔。
intent://{data}#IntentIntent中的data Uri的配置schemeIntent 中{data}的协议actionIntent的actiontypeIntent的类型launchFlags启动Intent时的flagpackageIntent携带的程序的包名，用于设置要打开哪个程序componentIntent携带的组件名（组件包名/组件名），用于设置要打开程序的某个界面extrasIntent携带的其他字段endIntent Uri的结束标记
Intent Uri 的解析
Intent Uri 通过Android中的 Intent#parseUri(String uri, @UriFlags int flags) 进行解析，返回 Intent 实例对象。
-
intent://{data}#Intent与scheme部分会被解析成 Intent 的mData字段。可通过Intent.getData()方法获取。 -
action部分会被解析成 Intent 的mAction字段。可通过Intent.getAction()方法获取。 -
type部分会被解析成 Intent 的mType字段。可通过Intent.getType()方法获取。 -
launchFlags部分会被解析成 Intent 的mFlags字段。可通过Intent.getFlags()方法获取。 -
pacakge部分会被解析成 Intent 的mPackage字段。可通过Intent.getPackage()方法获取。 -
component部分会被解析成 Intent 的mComponent字段。可通过Intent.getComponent()方法获取。 -
extras部分会被解析成 Intent的mExtras字段。可通过Intent.getExtras()方法获取。 extra 使用以下字符串开头（表示extra字段的类型），然后加上{key}={value}, extra 之间也使用;分隔。S.String类型B.Boolean类型b.Byte类型c.char类型d.Double类型f.Float类型i.Integer类型l.Long类型s.Shor类型
示例
intent:#Intent;action=your.example.namespace.CUSTOMACTION;package=your.example.namespace;component=your.example.namespace/.YourActivity;S.extraValueName=WOW;end
intent://intent_data_uri#Intent;scheme=novelx;action=jump.novel;type=plugin;component=net.sourceforge.simcpux/.MainActivity;i.param2=22323;S.url=http%3A%2F%2Fbaidu.com;S.parm1=str_1;end
Intent
public static Intent parseUri(String uri, @UriFlags int flags) throws URISyntaxException {
int i = 0;
try {
final boolean androidApp = uri.startsWith("android-app:");
// Validate intent scheme if requested.
if ((flags&(URI_INTENT_SCHEME|URI_ANDROID_APP_SCHEME)) != 0) {
if (!uri.startsWith("intent:") && !androidApp) {
Intent intent = new Intent(ACTION_VIEW);
try {
intent.setData(Uri.parse(uri));
} catch (IllegalArgumentException e) {
throw new URISyntaxException(uri, e.getMessage());
}
return intent;
}
}
i = uri.lastIndexOf("#");
// simple case
if (i == -1) {
if (!androidApp) {
return new Intent(ACTION_VIEW, Uri.parse(uri));
}
// old format Intent URI
} else if (!uri.startsWith("#Intent;", i)) {
if (!androidApp) {
return getIntentOld(uri, flags);
} else {
i = -1;
}
}
// new format
Intent intent = new Intent(ACTION_VIEW);
Intent baseIntent = intent;
boolean explicitAction = false;
boolean inSelector = false;
// fetch data part, if present
String scheme = null;
String data;
if (i >= 0) {
data = uri.substring(0, i);
i += 8; // length of "#Intent;"
} else {
data = uri;
}
// loop over contents of Intent, all name=value;
while (i >= 0 && !uri.startsWith("end", i)) {
int eq = uri.indexOf('=', i);
if (eq < 0) eq = i-1;
int semi = uri.indexOf(';', i);
String value = eq < semi ? Uri.decode(uri.substring(eq + 1, semi)) : "";
// action
if (uri.startsWith("action=", i)) {
intent.setAction(value);
if (!inSelector) {
explicitAction = true;
}
}
// categories
else if (uri.startsWith("category=", i)) {
intent.addCategory(value);
}
// type
else if (uri.startsWith("type=", i)) {
intent.mType = value;
}
// identifier
else if (uri.startsWith("identifier=", i)) {
intent.mIdentifier = value;
}
// launch flags
else if (uri.startsWith("launchFlags=", i)) {
intent.mFlags = Integer.decode(value).intValue();
if ((flags& URI_ALLOW_UNSAFE) == 0) {
intent.mFlags &= ~IMMUTABLE_FLAGS;
}
}
// package
else if (uri.startsWith("package=", i)) {
intent.mPackage = value;
}
// component
else if (uri.startsWith("component=", i)) {
intent.mComponent = ComponentName.unflattenFromString(value);
}
// scheme
else if (uri.startsWith("scheme=", i)) {
if (inSelector) {
intent.mData = Uri.parse(value + ":");
} else {
scheme = value;
}
}
// source bounds
else if (uri.startsWith("sourceBounds=", i)) {
intent.mSourceBounds = Rect.unflattenFromString(value);
}
// selector
else if (semi == (i+3) && uri.startsWith("SEL", i)) {
intent = new Intent();
inSelector = true;
}
// extra
else {
String key = Uri.decode(uri.substring(i + 2, eq));
// create Bundle if it doesn't already exist
if (intent.mExtras == null) intent.mExtras = new Bundle();
Bundle b = intent.mExtras;
// add EXTRA
if (uri.startsWith("S.", i)) b.putString(key, value);
else if (uri.startsWith("B.", i)) b.putBoolean(key, Boolean.parseBoolean(value));
else if (uri.startsWith("b.", i)) b.putByte(key, Byte.parseByte(value));
else if (uri.startsWith("c.", i)) b.putChar(key, value.charAt(0));
else if (uri.startsWith("d.", i)) b.putDouble(key, Double.parseDouble(value));
else if (uri.startsWith("f.", i)) b.putFloat(key, Float.parseFloat(value));
else if (uri.startsWith("i.", i)) b.putInt(key, Integer.parseInt(value));
else if (uri.startsWith("l.", i)) b.putLong(key, Long.parseLong(value));
else if (uri.startsWith("s.", i)) b.putShort(key, Short.parseShort(value));
else throw new URISyntaxException(uri, "unknown EXTRA type", i);
}
// move to the next item
i = semi + 1;
}
if (inSelector) {
// The Intent had a selector; fix it up.
if (baseIntent.mPackage == null) {
baseIntent.setSelector(intent);
}
intent = baseIntent;
}
if (data != null) {
if (data.startsWith("intent:")) {
data = data.substring(7);
if (scheme != null) {
data = scheme + ':' + data;
}
} else if (data.startsWith("android-app:")) {
if (data.charAt(12) == '/' && data.charAt(13) == '/') {
// Correctly formed android-app, first part is package name.
int end = data.indexOf('/', 14);
if (end < 0) {
// All we have is a package name.
intent.mPackage = data.substring(14);
if (!explicitAction) {
intent.setAction(ACTION_MAIN);
}
data = "";
} else {
// Target the Intent at the given package name always.
String authority = null;
intent.mPackage = data.substring(14, end);
int newEnd;
if ((end+1) < data.length()) {
if ((newEnd=data.indexOf('/', end+1)) >= 0) {
// Found a scheme, remember it.
scheme = data.substring(end+1, newEnd);
end = newEnd;
if (end < data.length() && (newEnd=data.indexOf('/', end+1)) >= 0) {
// Found a authority, remember it.
authority = data.substring(end+1, newEnd);
end = newEnd;
}
} else {
// All we have is a scheme.
scheme = data.substring(end+1);
}
}
if (scheme == null) {
// If there was no scheme, then this just targets the package.
if (!explicitAction) {
intent.setAction(ACTION_MAIN);
}
data = "";
} else if (authority == null) {
data = scheme + ":";
} else {
data = scheme + "://" + authority + data.substring(end);
}
}
} else {
data = "";
}
}
if (data.length() > 0) {
try {
intent.mData = Uri.parse(data);
} catch (IllegalArgumentException e) {
throw new URISyntaxException(uri, e.getMessage());
}
}
}
return intent;
} catch (IndexOutOfBoundsException e) {
throw new URISyntaxException(uri, "illegal Intent URI format", i);
}
}
