MutableContextWrapper示例

Author: crazyqiang

app/src/main/java/org/ninetripods/mq/study/CommonWebviewActivity.kt

@@ -7,7 +7,7 @@ import android.view.KeyEvent
 import android.view.ViewGroup
 import android.widget.RelativeLayout
 import androidx.appcompat.widget.Toolbar
-import org.ninetripods.mq.study.util.WebViewPool.getCachedWebView
+import org.ninetripods.mq.study.util.WebViewPool
 import org.ninetripods.mq.study.util.webview.Html5Webview
 
 
@@ -31,15 +31,12 @@ class CommonWebviewActivity : BaseActivity() {
  val toolbar = findViewById<Toolbar>(R.id.toolbar)
  initToolBar(toolbar, "AndroidStudy", true)
  mContainer = findViewById(R.id.rl_container)
- mWebView = getCachedWebView(this)
+ mWebView = WebViewPool.getCachedWebView(this)
  if (mWebView == null) {
  //没有缓存
  mWebView = Html5Webview(this)
  }
- val params = RelativeLayout.LayoutParams(
- RelativeLayout.LayoutParams.MATCH_PARENT,
- ViewGroup.LayoutParams.MATCH_PARENT
- )
+ val params = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
  params.addRule(RelativeLayout.BELOW, R.id.toolbar)
  mContainer?.addView(mWebView, params)
 

app/src/main/java/org/ninetripods/mq/study/MainActivity.java

@@ -19,6 +19,7 @@
 import org.ninetripods.mq.study.jetpack.JetpackAndKtFragment;
 import org.ninetripods.mq.study.jetpack.KConsts;
 import org.ninetripods.mq.study.jetpack_compose.JetpackComposeFragment;
+import org.ninetripods.mq.study.util.WebViewPool;
 import org.ninetripods.mq.study.util.fragment.HomeFragment;
 import org.ninetripods.mq.study.util.fragment.MultiThreadFragment;
 import org.ninetripods.mq.study.util.fragment.NestedScrollFragment;
@@ -48,7 +49,7 @@ public void initViews() {
  ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(this, drawer_layout, toolbar, 0, 0);
  drawerToggle.syncState();
  //NOTE: 切换初始化展示的Fragment
- selectItem(KConsts.FRAGMENT_HOME);
+ selectItem(KConsts.FRAGMENT_NESTED_SCROLLER);
  }
 
  @Override
@@ -165,4 +166,10 @@ public void onBackPressed() {
  }
  back_pressed = System.currentTimeMillis();
  }
+
+ @Override
+ protected void onDestroy() {
+ WebViewPool.INSTANCE.releaseAll();
+ super.onDestroy();
+ }
 }

app/src/main/java/org/ninetripods/mq/study/MyApplication.kt

@@ -1,48 +1,41 @@
-package org.ninetripods.mq.study;
+package org.ninetripods.mq.study
 
-import android.app.Application;
-import android.content.Context;
-
-import androidx.lifecycle.ProcessLifecycleOwner;
-import androidx.multidex.MultiDex;
-
-import org.ninetripods.mq.study.jetpack.lifecycle.MyApplicationLifecycleObserver;
-import org.ninetripods.mq.study.jetpack.base.http.RetrofitUtil;
-import org.ninetripods.mq.study.util.SPHook;
-import org.ninetripods.mq.study.util.WebViewPool;
+import android.app.Application
+import android.content.Context
+import androidx.lifecycle.ProcessLifecycleOwner
+import androidx.multidex.MultiDex
+import org.ninetripods.mq.study.jetpack.base.http.RetrofitUtil.initRetrofit
+import org.ninetripods.mq.study.jetpack.lifecycle.MyApplicationLifecycleObserver
+import org.ninetripods.mq.study.util.SPHook.optimizeSpTask
+import org.ninetripods.mq.study.util.WebViewPool
 
 /**
  * Created by mq on 2018/8/19 下午9:17
  * mqcoder90@gmail.com
  */
-
-public class MyApplication extends Application {
-
- private static MyApplication application;
-
- @Override
- protected void attachBaseContext(Context base) {
- super.attachBaseContext(base);
+class MyApplication : Application() {
+ override fun attachBaseContext(base: Context) {
+ super.attachBaseContext(base)
  //为方法数超过 64K 的应用启用 MultiDex
  //https://developer.android.com/studio/build/multidex?hl=zh-cn
- MultiDex.install(this);
+ MultiDex.install(this)
  }
 
- @Override
- public void onCreate() {
- super.onCreate();
- application = this;
- //初始化Retrofit
- RetrofitUtil.INSTANCE.initRetrofit();
- //基于Lifecycle，监听Application的生命周期
- ProcessLifecycleOwner.get().getLifecycle().addObserver(new MyApplicationLifecycleObserver());
- //SP优化
- SPHook.INSTANCE.optimizeSpTask();
- //提前缓存WebView
- WebViewPool.INSTANCE.preloadWebView();
+ override fun onCreate() {
+ super.onCreate()
+ mApplication = this
+ initRetrofit() //初始化Retrofit
+ ProcessLifecycleOwner.get().lifecycle.addObserver(MyApplicationLifecycleObserver()) //基于Lifecycle，监听Application的生命周期
+ optimizeSpTask() //SP优化
+ WebViewPool.preloadWebView() //提前缓存WebView
  }
 
- public static MyApplication getApplication() {
- return application;
+ companion object {
+ var mApplication: MyApplication? = null
+
+ @JvmStatic
+ fun getApplication(): MyApplication {
+ return mApplication!!
+ }
  }
 }

app/src/main/java/org/ninetripods/mq/study/util/fragment/NestedScrollFragment.java

@@ -58,6 +58,6 @@ public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
  tv_nested_child_parent.setOnClickListener(v -> startActivity(new Intent(getActivity(), NestedScrollActivity.class)));
  mTvBehavior.setOnClickListener(v -> startActivity(new Intent(getActivity(), CustomBehaviorActivity.class)));
  mTvCustom.setOnClickListener(v -> CommonFragmentsActivity.Companion.start(
- Objects.requireNonNull(getActivity()), DemoFragment.class.getCanonicalName(), "DemoFragment"));
+ requireActivity(), DemoFragment.class.getCanonicalName(), "DemoFragment"));
  }
 }