Android Jetpack 鏄竴缁勭敤浜庡府鍔╁紑鍙戣€呮瀯寤洪珮璐ㄩ噺 Android 搴旂敤绋嬪簭鐨勫簱銆佸伐鍏峰拰鎸囧崡銆傚畠鍖呭惈浜嗚澶氱粍浠讹紝濡?LiveData銆乂iewModel銆丷oom銆丳aging銆乄orkManager銆丯avigation 绛夈€備互涓嬫槸浣跨敤 Android Jetpack 鐨勫熀鏈楠わ細

1. 閰嶇疆 Gradle锛氬湪椤圭洰鐨?build.gradle 鏂囦欢涓紩鍏?Jetpack 缁勪欢鐨勪緷璧栥€備緥濡傦紝瑕佷娇鐢?LiveData 鍜?ViewModel锛屽彲浠ユ坊鍔犱互涓嬩緷璧栵細

implementation "androidx.lifecycle:lifecycle-extensions:2.2.0"

2. 鍒涘缓 ViewModel锛氬垱寤轰竴涓户鎵胯嚜 ViewModel 鐨勭被锛屽苟灏嗕笟鍔￠€昏緫鍜屾暟鎹瓨鍌ㄥ湪鍏朵腑銆?/li>

class MyViewModel : ViewModel() {
private val _data = MutableLiveData<String>()
val data: LiveData<String> get() = _data
fun fetchData() {
// 浠庣綉缁滄垨鏁版嵁搴撹幏鍙栨暟鎹?/span>
// 鏇存柊 _data 鐨勫€?/span>
_data.value = "Hello, Jetpack!"
}
}

3. 鍒涘缓 Activity 鎴?Fragment锛氬湪 Activity 鎴?Fragment 涓疄渚嬪寲 ViewModel锛屽苟瑙傚療鏁版嵁鍙樺寲銆?/li>

class MyActivity : AppCompatActivity() {
private lateinit var viewModel: MyViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// ...
viewModel = ViewModelProvider(this).get(MyViewModel::class.java)
viewModel.data.observe(this, Observer { data ->
// 澶勭悊鏁版嵁鍙樺寲
})
}
}

杩欏彧鏄娇鐢?Android Jetpack 鐨勪竴灏忛儴鍒嗗姛鑳姐€備綘鍙互鏍规嵁鍏蜂綋闇€姹傞€夋嫨閫傚悎鐨勭粍浠跺拰搴擄紝骞舵寜鐓х浉搴旂殑鏂囨。鍜屾寚鍗椾娇鐢ㄥ畠浠€?/p>