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目標(biāo)
采用Retrofit,發(fā)送單個(gè)或多個(gè)網(wǎng)絡(luò)請(qǐng)求(串行),并更新UI.
實(shí)現(xiàn)方案
發(fā)送單個(gè)網(wǎng)絡(luò)請(qǐng)求方案
- 修改app工程的build.gradle文件
- 在android節(jié)點(diǎn)下添加如下信息
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
- 添加依賴
implementation 'com.squareup.retrofit2:retrofit:2.7.2'
implementation 'com.squareup.retrofit2:converter-gson:2.7.2'
- 定義數(shù)據(jù)類Task.kt
data class Task(val id: Int, var name: String)
- 創(chuàng)建網(wǎng)絡(luò)接口類NetworkService.kt
interface NetworkService {
@GET("cxyzy1/AndroidAsyncTaskDemo/raw/master/data.json")
fun query(): Call<Task>
}
- 創(chuàng)建網(wǎng)絡(luò)工具類NetworkUtils.kt
fun getNetworkService(): NetworkService {
val okHttpClient = OkHttpClient.Builder().build()
val retrofit = Retrofit.Builder()
.client(okHttpClient)
.baseUrl("https://gitee.com/")
.addConverterFactory(GsonConverterFactory.create())
.build()
return retrofit.create(NetworkService::class.java)
}
- activity調(diào)用
private fun queryData() {
val networkService = getNetworkService()
val call = networkService.query()
call.enqueue(object : Callback<Task?> {
override fun onResponse(call: Call<Task?>?, response: Response<Task?>) {
val bean: Task? = response.body()
contentTv.text = bean?.name
}
override fun onFailure(call: Call<Task?>?, t: Throwable) {
Log.e("MainActivity", "網(wǎng)絡(luò)請(qǐng)求失敗:" + t.message)
}
})
}
發(fā)送兩個(gè)網(wǎng)絡(luò)請(qǐng)求方案
- 修改app工程的build.gradle文件,同上
- 定義數(shù)據(jù)類Task.kt,同上
- 創(chuàng)建網(wǎng)絡(luò)接口類NetworkService.kt
interface NetworkService {
@GET("cxyzy1/AndroidAsyncTaskDemo/raw/master/data.json")
fun query(): Call<Task>
@GET("cxyzy1/AndroidAsyncTaskDemo/raw/master/data2.json")
fun query2(): Call<Task>
}
- 創(chuàng)建網(wǎng)絡(luò)工具類NetworkUtils.kt,同上
- activity調(diào)用
private fun queryData() {
val networkService = getNetworkService()
val call = networkService.query()
call.enqueue(object : Callback<Task?> {
override fun onResponse(call: Call<Task?>?, response: Response<Task?>) {
val bean: Task? = response.body()
contentTv.text = bean?.name
queryData2()
}
override fun onFailure(call: Call<Task?>?, t: Throwable) {
Log.e("MainActivity", "網(wǎng)絡(luò)請(qǐng)求失敗:" + t.message)
}
})
}
private fun queryData2() {
val networkService = getNetworkService()
val call = networkService.query2()
call.enqueue(object : Callback<Task?> {
override fun onResponse(call: Call<Task?>?, response: Response<Task?>) {
val bean: Task? = response.body()
contentTv2.text = bean?.name
}
override fun onFailure(call: Call<Task?>?, t: Throwable) {
Log.e("MainActivity", "網(wǎng)絡(luò)請(qǐng)求失敗:" + t.message)
}
})
}
代碼說明:
queryData訪問query接口完畢后,通過調(diào)用queryData2訪問query2接口.
完整源代碼
https://gitee.com/cxyzy1/AndroidAsyncTaskDemo/tree/master/retrofitDemo
