源代码备份

app/src/main/java/com/arialyy/simple/common/DirChooseDialog.java

@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.arialyy.simple.common;
+
+import android.annotation.SuppressLint;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.os.Environment;
+import android.util.DisplayMetrics;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProviders;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import com.arialyy.simple.R;
+import com.arialyy.simple.base.BaseDialog;
+import com.arialyy.simple.base.adapter.AbsHolder;
+import com.arialyy.simple.base.adapter.AbsRVAdapter;
+import com.arialyy.simple.base.adapter.RvItemClickSupport;
+import com.arialyy.simple.databinding.DialogChooseDirBinding;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by AriaL on 2019/5/28.
+ */
+@SuppressLint("ValidFragment") public class DirChooseDialog
+    extends BaseDialog<DialogChooseDirBinding> {
+  public static final int DIR_CHOOSE_DIALOG_RESULT = 0xB2;
+  private String mCurrentPath = Environment.getExternalStorageDirectory().getPath();
+  private List<File> mData = new ArrayList<>();
+  private DialogModule mModule;
+
+  public DirChooseDialog(Object obj) {
+    super(obj);
+  }
+
+  @Override protected void init(Bundle savedInstanceState) {
+    super.init(savedInstanceState);
+    getBinding().list.setLayoutManager(new LinearLayoutManager(getContext()));
+    getBinding().list.addItemDecoration(
+        new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL));
+    final Adapter adapter = new Adapter(getContext(), mData);
+    getBinding().list.setAdapter(adapter);
+    getBinding().setCurrentPath(mCurrentPath);
+
+    mModule = ViewModelProviders.of(this).get(DialogModule.class);
+    mModule.getDirs(mCurrentPath).observe(this, new Observer<List<File>>() {
+      @Override public void onChanged(@Nullable List<File> files) {
+        mData.clear();
+        if (files != null && !files.isEmpty()) {
+          mData.addAll(files);
+        }
+        adapter.notifyDataSetChanged();
+        if (mCurrentPath.equals(Environment.getExternalStorageDirectory().getPath())) {
+          getBinding().up.setVisibility(View.GONE);
+        }
+        getBinding().setCurrentPath(mCurrentPath);
+        getBinding().currentPath.setSelected(true);
+      }
+    });
+
+    getBinding().up.setOnClickListener(new View.OnClickListener() {
+      @Override public void onClick(View v) {
+        up();
+      }
+    });
+
+    getBinding().enter.setOnClickListener(new View.OnClickListener() {
+      @Override public void onClick(View v) {
+        getSimplerModule().onDialog(DIR_CHOOSE_DIALOG_RESULT, mCurrentPath);
+        dismiss();
+      }
+    });
+
+    RvItemClickSupport.addTo(getBinding().list).setOnItemClickListener(
+        new RvItemClickSupport.OnItemClickListener() {
+          @Override public void onItemClicked(RecyclerView recyclerView, int position, View v) {
+            getBinding().up.setVisibility(View.VISIBLE);
+            mCurrentPath = mCurrentPath.concat("/").concat(mData.get(position).getName());
+            mModule.getDirs(mCurrentPath);
+          }
+        });
+  }
+
+  private void up() {
+    int endIndex = mCurrentPath.lastIndexOf("/");
+    mCurrentPath = mCurrentPath.substring(0, endIndex);
+    mModule.getDirs(mCurrentPath);
+  }
+
+  @Override public void onStart() {
+    super.onStart();
+    Dialog dialog = getDialog();
+    if (dialog != null) {
+      DisplayMetrics dm = new DisplayMetrics();
+      getActivity().getWindowManager().getDefaultDisplay().getMetrics(dm);
+      dialog.getWindow()
+          .setLayout((dm.widthPixels), ViewGroup.LayoutParams.WRAP_CONTENT);
+      // 拦截返回键
+      dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
+        @Override public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
+          if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
+            if (mCurrentPath.equals(Environment.getExternalStorageDirectory().getPath())) {
+              dismiss();
+            } else {
+              up();
+            }
+            return true;
+          }
+          return false;
+        }
+      });
+    }
+  }
+
+  @Override protected int setLayoutId() {
+    return R.layout.dialog_choose_dir;
+  }
+
+  /**
+   * 适配器
+   */
+  private class Adapter extends AbsRVAdapter<File, Adapter.Holder> {
+
+    Adapter(Context context, List<File> data) {
+      super(context, data);
+    }
+
+    @Override protected Holder getViewHolder(View convertView, int viewType) {
+      return new Holder(convertView);
+    }
+
+    @Override protected int setLayoutId(int type) {
+      return R.layout.item_choose_dir;
+    }
+
+    @Override protected void bindData(Holder holder, int position, File item) {
+      holder.text.setSelected(true);
+      holder.text.setText(item.getName());
+    }
+
+    private class Holder extends AbsHolder {
+      private TextView text;
+
+      Holder(View itemView) {
+        super(itemView);
+        text = findViewById(R.id.text);
+      }
+    }
+  }
+}