对Activity和Fragment之间的跳转封装处理，在Activity/Framgent中用法基本一样。每个函数基本上都对应着一个扩展函数，方便调用。实现方式有很多种，可以自由组合，实际使用时按需求使用。
createIntent :生成跳转的Intent并添加参数(可选）
addPair :Intent 添加参数
startActivityK :跳转
startActivityForResultK :带回调的跳转
browse :打开浏览器
share :生调用分享，只能分享文本
email :发送邮件
makeCallPermission :拨打电话，需要权限
makeCall :拨打电话
sendSMS :发送短信
IntentKtx.startActivityK(this,TvActivity::class.java)
IntentKtx.startActivityK<TvActivity>(this)
startActivityK<TvActivity>()//扩展函数
前两个是封装函数，第3个是扩展函数，可以直接在Activity好Fragment中调用，在其他地方只要有Context也可以调用扩展函数，方式如下：
context.startActivityK<TvActivity>()
val intent = Intent(this,TvActivity::class.java)
intent.putExtra("tv","one")
intent.putExtra("hai","hai---")
IntentKtx.startActivityK(this,intent)
对应的扩展函数：
val intent = Intent(this,TvActivity::class.java)
intent.putExtra("tv","one")
intent.putExtra("hai","hai---")
// IntentKtx.startActivityK(this,intent)
startActivityK(intent)
更简便的写法：
Intent(this,TvActivity::class.java)
.addPair("tv" to "one", "hai" to "two")
?.let { startActivityK(it) }
//或者直接调用扩展函数帮助生成Intent
createIntent<TvActivity>(
"tv" to "one",
"hai" to "two"
).let { startActivityK(it) }
//函数
IntentKtx.startActivityK(this,TvActivity::class.java,"tv" to "one","hai" to "hello")
//扩展函数
startActivityK(TvActivity::class.java,"tv" to "one","hai" to "hello")
//函数
IntentKtx.startActivityK<TvActivity>(this,"tv" to "one","hai" to "hello")
//扩展函数
startActivityK<TvActivity>("tv" to "one","hai" to "hello")
ActivityHelper.init(this)
?.startActivityForResult(TvActivity::class.java){reuslt,intent->
Log.e(TAG, "btnMainStartListener: $reuslt ---- ${intent?.getStringExtra("key")}");
}
startActivityForResultK(TvActivity::class.java){ reuslt ,intent->
Log.e(TAG, "btnMainStartListener: $reuslt ---- ${intent?.getStringExtra("key")}");
}
ActivityHelper.init(this)
?.startActivityForResult<TvActivity>{reuslt,intent->
Log.e(TAG, "btnMainStartListener: $reuslt ---- ${intent?.getStringExtra("key")}");
}
startActivityForResultK<TvActivity>{result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---${intent?.getStringExtra("key")}")
}
//带参数跳转,数据放在 intent 里面
/* val intent2 = Intent(this,TvActivity::class.java)
intent2.putExtra("tv","key one")
ActivityHelper.init(this)
?.startActivityForResult(intent2){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}*/
//扩展函数
/* val intent2 = Intent(this,TvActivity::class.java)
intent2.putExtra("tv","key one")
startActivityForResultK(intent2){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}*/
//pair 传值
/*ActivityHelper.init(this)
?.startActivityForResult(TvActivity::class.java,
"tv" to "key one", "hai" to "key two"){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}*/
//扩展函数
/* startActivityForResultK(TvActivity::class.java,
"key" to "key one", "key2" to "key two"){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}*/
//方法一
ActivityHelper.init(this)
?.startActivityForResult(TvActivity::class.java,{result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
},"key" to "key one", "key2" to "key two")
//方法二
ActivityHelper.init(this)
?.startActivityForResult<TvActivity>("key" to "key one", "key2" to "key two"){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}
//扩展函数
startActivityForResultK<TvActivity>("tv" to "key one", "hai" to "key two"){result ,intent->
Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
}
在目标Activity/Fragment界面，创建函数实现跳转。这样方便其他人调用跳转，而且不用关心传值的key，也方便以后同意修改。这里面无法直接使用扩展函数，有些方法虽然可以使用，但是并不比扩展函数更方便，这里给出示例，实现方式有很多种，可以自由组合，实际使用时按需求使用。
companion object{
//这里使用不了扩展函数,简单几个示例,不带回调跳转
//不传参数一般也没必要在这里写，直接使用扩展函数更方便
fun starter(context: Context){
IntentKtx.startActivityK(context,TvActivity::class.java)
}
fun starter2(context: Context){
IntentKtx.startActivityK<TvActivity>(context)
}
//一般这种没有必要写在这里，直接用扩展函数跳转就好了
fun starter(context: Context,vararg pair: Pair<String,Any?>){
IntentKtx.startActivityK<TvActivity>(context,*pair)
}
//这里比较实现这种情况，key值定好，调用的地方直接传对应的参数就行了
fun starter(context: Context,tv: String?,hai: String?){
val intent = Intent(context,TvActivity::class.java)
intent.addPair("tv" to tv, "hai" to hai)
IntentKtx.startActivityK(context,intent)
}
//带回调跳转
fun starter(context: Context?,callback: ((Int, Intent?) -> Unit)?){
ActivityHelper.init(context)
?.startActivityForResult<TvActivity>(callback)
}
//回调也一样，这里比较适合这种情况
fun starter(context: Context?,tv: String?,hai: String?,callback: ((Int, Intent?) -> Unit)?){
val intent = Intent(context,TvActivity::class.java)
intent.addPair("tv" to tv, "hai" to hai)
ActivityHelper.init(context)
?.startActivityForResult(intent,callback)
}
//写成下面这样更简洁
fun starter(context: Context, tv: String?, hai: String?, callback: ((Int, Intent?) -> Unit)?){
val intent = context.createIntent<TextViewActivity>("tv" to tv, "hai" to hai)
ActivityHelper.init(context)
?.startActivityForResult(intent,callback)
}
//或者写成这样，实现方式有很多，可以自由组合
fun starter2(context: Context, tv: String?, hai: String?, callback: ((Int, Intent?) -> Unit)?){
val intent = context.createIntent<TextViewActivity>("tv" to tv, "hai" to hai)
context.startActivityForResultK(intent,callback)
}
}
其他界面调用示例：
//调用跳转类的跳转方法
// TvActivity.starter(this)
// TvActivity.starter(this,"one","two")
//回调跳转
// TvActivity.starter(this,"one","two"){result,intent ->
// Log.e(TAG, "btnMainStartListener: $result ---- ${intent?.getStringExtra("key")}")
// }
内容比较简单，只有三个类，约400行代码。复制到代码中即可使用。
class RouterFragment : Fragment() {
private val mCallbacks: SparseArray<((Int, Intent?) -> Unit)?> = SparseArray()
private val mCodeGenerator: Random = Random()
companion object {
fun newInstance(): RouterFragment? {
return RouterFragment()
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
//防止重复创建
retainInstance = true
}
fun startActivityForResult(intent: Intent, callback: ((Int, Intent?) -> Unit)?) {
val requestCode = makeRequestCode()
mCallbacks.put(requestCode, callback)
startActivityForResult(intent, requestCode)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
//处理返回的结果
val callback = mCallbacks[requestCode]
mCallbacks.remove(requestCode)
callback?.run {
invoke(resultCode, data)
}
}
/**
* 随机生成唯一的requestCode，最多尝试10次
* @return
*/
private fun makeRequestCode(): Int {
var requestCode: Int
var tryCount = 0
do {
requestCode = mCodeGenerator.nextInt(0x0000FFFF)
tryCount++
} while (mCallbacks.indexOfKey(requestCode) >= 0 && tryCount < 10)
return requestCode
}
}
object IntentKtx {
fun addPair(intent: Intent, vararg params: Pair<String, Any?>) {
params.forEach {
when (val value = it.second) {
null -> intent.putExtra(it.first, null as Serializable?)
is Int -> intent.putExtra(it.first, value)
is Long -> intent.putExtra(it.first, value)
is CharSequence -> intent.putExtra(it.first, value)
is String -> intent.putExtra(it.first, value)
is Float -> intent.putExtra(it.first, value)
is Double -> intent.putExtra(it.first, value)
is Char -> intent.putExtra(it.first, value)
is Short -> intent.putExtra(it.first, value)
is Boolean -> intent.putExtra(it.first, value)
is Serializable -> intent.putExtra(it.first, value)
is Bundle -> intent.putExtra(it.first, value)
is Parcelable -> intent.putExtra(it.first, value)
is Array<*> -> when {
value.isArrayOf<CharSequence>() -> intent.putExtra(it.first, value)
value.isArrayOf<String>() -> intent.putExtra(it.first, value)
value.isArrayOf<Parcelable>() -> intent.putExtra(it.first, value)
else -> throw Exception("Intent extra ${it.first} has wrong type ${value.javaClass.name}")
}
is IntArray -> intent.putExtra(it.first, value)
is LongArray -> intent.putExtra(it.first, value)
is FloatArray -> intent.putExtra(it.first, value)
is DoubleArray -> intent.putExtra(it.first, value)
is CharArray -> intent.putExtra(it.first, value)
is ShortArray -> intent.putExtra(it.first, value)
is BooleanArray -> intent.putExtra(it.first, value)
else -> throw Exception("Intent extra ${it.first} has wrong type ${value.javaClass.name}")
}
}
}
/**
* 不带回调跳转相关
*/
fun startActivityK(context: Context?, clazz: Class<*>) {
context?.startActivity(Intent(context, clazz))
}
inline fun <reified T> startActivityK(context: Context?) {
context?.startActivity(Intent(context, T::class.java))
}
fun startActivityK(context: Context?, intent: Intent) {
context?.startActivity(intent)
}
fun startActivityK(context: Context?, clazz: Class<*>, vararg params: Pair<String, Any?>) {
context?.run {
val intent = Intent(this, clazz)
intent.addPair(*params)
startActivity(intent)
}
}
inline fun <reified T> startActivityK(context: Context?, vararg params: Pair<String, Any?>) {
context?.run {
val intent = Intent(this, T::class.java)
intent.addPair(*params)
startActivity(intent)
}
}
}
/**
*生成跳转的Intent并添加参数
* @param T
* @param pair
*/
inline fun <reified T> Context.createIntent(vararg pair: Pair<String, Any?>) =
Intent(this, T::class.java).apply {
addPair(*pair)
}
/**
*给Intent添加参数
* @param params
* @return
*/
fun Intent?.addPair(vararg params: Pair<String, Any?>): Intent? {
return this?.also { IntentKtx.addPair(it, *params) }
}
/**
* 不带回调,无参跳转
*/
fun Context?.startActivityK(clazz: Class<*>) {
this?.startActivity(Intent(this, clazz))
}
inline fun <reified T> Context?.startActivityK() {
this?.startActivity(Intent(this, T::class.java))
}
/**
* 不带回调,带参跳转
*/
fun Context?.startActivityK(intent: Intent) {
this?.startActivity(intent)
}
fun Context?.startActivityK(clazz: Class<*>, vararg pair: Pair<String, Any?>) {
this?.run {
val intent = Intent(this, clazz)
startActivity(intent.addPair(*pair))
}
}
inline fun <reified T> Context?.startActivityK(vararg pair: Pair<String, Any?>) {
this?.run {
val intent = Intent(this, T::class.java)
startActivity(intent.addPair(*pair))
}
}
/**
* 不带回调,无参跳转
*/
fun Fragment?.startActivityK(clazz: Class<*>) {
this?.startActivity(Intent(activity, clazz))
}
inline fun <reified T> Fragment?.startActivityK() {
this?.startActivity(Intent(activity, T::class.java))
}
/**
* 不带回调,带参跳转
*/
fun Fragment?.startActivityK(intent: Intent) {
this?.startActivity(intent)
}
fun Fragment?.startActivityK(clazz: Class<*>, vararg pair: Pair<String, Any?>) {
this?.run {
val intent = Intent(activity, clazz)
startActivity(intent.addPair(*pair))
}
}
inline fun <reified T> Fragment?.startActivityK(vararg pair: Pair<String, Any?>) {
this?.run {
val intent = Intent(activity, T::class.java)
startActivity(intent.addPair(*pair))
}
}
/**
* Context扩展函数跳转
*/
fun Context?.startActivityForResultK(clazz: Class<*>, callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this)?.startActivityForResult(clazz, callback)
}
fun Context?.startActivityForResultK(intent: Intent, callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this)?.startActivityForResult(intent, callback)
}
inline fun <reified T> Context?.startActivityForResultK(noinline callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this)?.startActivityForResult<T>(callback)
}
fun Context?.startActivityForResultK(
clazz: Class<*>,
vararg pair: Pair<String, Any?>,
callback: ((Int, Intent?) -> Unit)?
) {
ActivityHelper.init(this)
?.startActivityForResult(clazz, callback, *pair)
}
inline fun <reified T> Context?.startActivityForResultK(
vararg pair: Pair<String, Any?>,
noinline callback: ((Int, Intent?) -> Unit)?
) {
ActivityHelper.init(this)
?.startActivityForResult<T>(callback, *pair)
}
/**
* 上述方法在 fragment 中扩展
*/
fun Fragment?.startActivityForResultK(clazz: Class<*>, callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this?.context)?.startActivityForResult(clazz, callback)
}
fun Fragment?.startActivityForResultK(intent: Intent, callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this?.context)?.startActivityForResult(intent, callback)
}
inline fun <reified T> Fragment?.startActivityForResultK(noinline callback: ((Int, Intent?) -> Unit)?) {
ActivityHelper.init(this?.context)?.startActivityForResult<T>(callback)
}
fun Fragment?.startActivityForResultK(
clazz: Class<*>,
vararg pair: Pair<String, Any?>,
callback: ((Int, Intent?) -> Unit)?
) {
ActivityHelper.init(this?.context)
?.startActivityForResult(clazz, callback, *pair)
}
inline fun <reified T> Fragment?.startActivityForResultK(
vararg pair: Pair<String, Any?>,
noinline callback: ((Int, Intent?) -> Unit)?
) {
ActivityHelper.init(this?.context)
?.startActivityForResult<T>(callback, *pair)
}
class ActivityHelper private constructor(activity: FragmentActivity) {
private val TAG = "MMMK"
var mContext: Activity? = null
private var mRouterFragment: RouterFragment? = null
init {
mContext = activity
mRouterFragment = getRouterFragment(activity)
}
companion object {
// fun init(activity: FragmentActivity?): ActivityHelper? {
// if (activity != null) return ActivityHelper(activity)
// return null
// }
fun init(context: Context?): ActivityHelper? {
if (context is FragmentActivity) return ActivityHelper(context)
return null
}
}
private fun getRouterFragment(activity: FragmentActivity): RouterFragment? {
var routerFragment: RouterFragment? = findRouterFragment(activity)
if (routerFragment == null) {
//创建 fragment,加入当前 activity
routerFragment = RouterFragment.newInstance()
val sfm = activity.supportFragmentManager
sfm.beginTransaction().add(routerFragment!!, TAG).commitAllowingStateLoss()
sfm.executePendingTransactions()
}
return routerFragment
}
private fun findRouterFragment(activity: FragmentActivity): RouterFragment? {
//通过 tag 获取 fragment
return activity.supportFragmentManager.findFragmentByTag(TAG) as RouterFragment?
}
/**
* 对Intent跳转,不带参数
*/
fun startActivityForResult(
clazz: Class<*>,
callback: ((Int, Intent?) -> Unit)?
) {
mContext?.run {
val intent = Intent(this, clazz)
startActivityForResult(intent, callback)
}
}
inline fun <reified T> startActivityForResult(noinline callback: ((Int, Intent?) -> Unit)?) {
mContext?.run {
val intent = Intent(mContext, T::class.java)
startActivityForResult(intent, callback)
}
}
/**
*带参数跳转
* @param T
* @param pair
* @param callback
*/
inline fun <reified T> startActivityForResult(
vararg pair: Pair<String, Any?>,
noinline callback: ((Int, Intent?) -> Unit)?
) {
if (mContext == null) return
val intent = Intent(mContext, T::class.java)
IntentKtx.addPair(intent, *pair)
startActivityForResult(intent, callback)
}
inline fun <reified T> startActivityForResult(
noinline callback: ((Int, Intent?) -> Unit)?,
vararg pair: Pair<String, Any?>
) {
if (mContext == null) return
val intent = Intent(mContext, T::class.java)
IntentKtx.addPair(intent, *pair)
startActivityForResult(intent, callback)
}
fun startActivityForResult(
clazz: Class<*>,
vararg pair: Pair<String, Any?>,
callback: ((Int, Intent?) -> Unit)?
) {
mContext?.run {
val intent = Intent(this, clazz)
IntentKtx.addPair(intent, *pair)
startActivityForResult(intent, callback)
}
}
fun startActivityForResult(
clazz: Class<*>,
callback: ((Int, Intent?) -> Unit)?,
vararg pair: Pair<String, Any?>
) {
mContext?.run {
val intent = Intent(this, clazz)
IntentKtx.addPair(intent, *pair)
startActivityForResult(intent, callback)
}
}
/**
* 对Intent跳转,带参数
* @param intent 参数提取放入intent中
* @param callback
*/
fun startActivityForResult(intent: Intent, callback: ((Int, Intent?) -> Unit)?) {
mRouterFragment?.run {
startActivityForResult(intent, callback)
}
}
}
不想复制更省事的方法，直接依赖即可。依赖如下：
上面有详细的文档。
allprojects {
repositories {
...
maven { url 'https://www.jitpack.io' }
}
}
dependencies {
implementation 'com.github.KiWiLss:LUtils:1.1.0'
}
使用前要调用，获取到 Context：
object LUtilsConfig{
lateinit var mContext: Context
fun init(context: Context) {
mContext = context
}