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foudations/mogo-commons/src/main/java/com/mogo/commons/mvp/MvpDialogFragment.java

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+package com.mogo.commons.mvp;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.Fragment;
+
+/**
+ * @author congtaowang
+ * @since 2019-12-23
+ * <p>
+ * mvp fragment
+ */
+public abstract class MvpDialogFragment< V extends IView, P extends Presenter< V > > extends DialogFragment implements IView {
+
+    private Context mContext;
+    protected P mPresenter;
+    protected View mRootView;
+
+    @Override
+    public void onAttach( Context context ) {
+        super.onAttach( context );
+        mContext = context;
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView( @NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState ) {
+        if ( mRootView == null ) {
+            mRootView = inflater.inflate( getLayoutId(), container, false );
+        } else {
+            ViewGroup viewGroup = ( ViewGroup ) mRootView.getParent();
+            if ( viewGroup != null )
+                viewGroup.removeView( mRootView );
+        }
+        return mRootView;
+    }
+
+    @Override
+    public void onViewCreated( @NonNull View view, @Nullable Bundle savedInstanceState ) {
+        super.onViewCreated( view, savedInstanceState );
+    }
+
+    /**
+     * 布局资源
+     *
+     * @return
+     */
+    protected abstract int getLayoutId();
+
+    @Override
+    public void onActivityCreated( @Nullable Bundle savedInstanceState ) {
+        super.onActivityCreated( savedInstanceState );
+        initViews();
+        mPresenter = createPresenter();
+        getViewLifecycleOwner().getLifecycle().addObserver( mPresenter );
+    }
+
+    /**
+     * 初始化控件，必须在初始化完成之后才可以实例化presenter，避免
+     * presenter 生命周期错乱
+     */
+    protected abstract void initViews();
+
+    /**
+     * 创建 presenter 实例
+     *
+     * @return
+     */
+    @NonNull
+    protected abstract P createPresenter();
+
+    @Nullable
+    protected < T extends View > T findViewById( int id ) {
+        if ( mRootView != null ) {
+            return ( T ) mRootView.findViewById( id );
+        }
+        return null;
+    }
+
+    @Nullable
+    @Override
+    public Context getContext() {
+        if ( mContext == null ) {
+            mContext = super.getContext();
+        }
+        return mContext;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        if ( mPresenter != null ) {
+            getViewLifecycleOwner().getLifecycle().removeObserver( mPresenter );
+        }
+        mPresenter = null;
+        mRootView = null;
+        mContext = null;
+    }
+}