你好它已經2天我正在尋找一個解決方案,並仍然不知道該怎麼做,我想做一個左右滑動也重新排列回收視圖,當用戶向左滑動它會自動列在已完成列表中,如果在左側滑動,則會在回收視圖中刪除列表項,並且用戶可以重新排列我長按的列表元素。添加滑動和重新排列到一個循環視圖
這裏是主要活動:
public class MainActivity extends AppCompatActivity {
private RecyclerView shoppingItems;
private Toolbar toolbar;
private Realm realm;
private CoordinatorLayout coordinatorLayout;
private List<ShoppingItem> dataSet;
private RecyclerView.Adapter shoppingItemsAdapter = new RecyclerView.Adapter() {
private final int ACTIVE_VIEW=1;
private final int INACTIVE_VIEW=2;
private final int SUBHEADER_VIEW=3;
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if(viewType == ACTIVE_VIEW) {
View v = getLayoutInflater().inflate(R.layout.active_item, parent, false);
return new ActiveItemViewHolder(v,
(CheckBox)v.findViewById(R.id.item_status),
(TextView)v.findViewById(R.id.item_name),
(TextView)v.findViewById(R.id.item_quantity),
(ImageView)v.findViewById(R.id.item_action)
);
} else if(viewType == INACTIVE_VIEW) {
View v = getLayoutInflater().inflate(R.layout.inactive_item, parent, false);
return new InactiveItemViewHolder(v,
(CheckBox)v.findViewById(R.id.item_status),
(TextView)v.findViewById(R.id.item_name),
(ImageView)v.findViewById(R.id.item_action)
);
} else {
View v = getLayoutInflater().inflate(R.layout.subheader, parent, false);
return new SubheaderViewHolder(v);
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
final ShoppingItem currentItem = dataSet.get(position);
if(currentItem.getTimestamp()==-1) return;
if(currentItem.isCompleted()) {
InactiveItemViewHolder h = (InactiveItemViewHolder)holder;
h.itemName.setText(currentItem.getName());
h.itemName.setPaintFlags(h.itemName.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
h.itemAction.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar snackbar = Snackbar
.make(coordinatorLayout, "Task is restored", Snackbar.LENGTH_LONG);
snackbar.show();
realm.beginTransaction();
currentItem.setCompleted(false);
currentItem.setTimestamp(System.currentTimeMillis());
realm.commitTransaction();
initializeDataSet();
shoppingItemsAdapter.notifyDataSetChanged();
}
});
}else{
ActiveItemViewHolder h = (ActiveItemViewHolder)holder;
h.itemName.setText(currentItem.getName());
h.itemQuantity.setText(currentItem.getQuantity());
h.itemStatus.setChecked(false);
h.itemStatus.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
if (checked) {
realm.beginTransaction();
currentItem.setCompleted(true);
currentItem.setTimestamp(System.currentTimeMillis());
realm.commitTransaction();
initializeDataSet();
shoppingItemsAdapter.notifyDataSetChanged();
Snackbar snackbar = Snackbar
.make(coordinatorLayout, "Task is Completed", Snackbar.LENGTH_LONG)
.setAction("UNDO", new View.OnClickListener() {
@Override
public void onClick(View view) {
realm.beginTransaction();
currentItem.setCompleted(false);
currentItem.setTimestamp(System.currentTimeMillis());
realm.commitTransaction();
initializeDataSet();
shoppingItemsAdapter.notifyDataSetChanged();
Snackbar snackbar1 = Snackbar.make(coordinatorLayout, "Task is restored!", Snackbar.LENGTH_SHORT);
snackbar1.show();
}
});
snackbar.show();
}
}
});
h.itemAction.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this, ItemActivity.class);
i.putExtra("TITLE", "Edit item");
i.putExtra("ITEM_NAME", currentItem.getName());
i.putExtra("ITEM_QUANTITY", currentItem.getQuantity());
i.putExtra("ITEM_ID", currentItem.getId());
startActivityForResult(i, 1);
}
});
}
}
@Override
public int getItemCount() {
return dataSet.size();
}
@Override
public int getItemViewType(int position) {
ShoppingItem currentItem = dataSet.get(position);
if(currentItem.getTimestamp()==-1) return SUBHEADER_VIEW;
if(currentItem.isCompleted()) return INACTIVE_VIEW;
return ACTIVE_VIEW;
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
coordinatorLayout = (CoordinatorLayout) findViewById(R.id.coordinatorLayout);
toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
RealmConfiguration configuration =
new RealmConfiguration.Builder(this).build();
Realm.setDefaultConfiguration(configuration);
realm = Realm.getDefaultInstance();
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this, ItemActivity.class);
i.putExtra("TITLE", "Add Task");
startActivityForResult(i, 1);
}
});
shoppingItems = (RecyclerView)findViewById(R.id.shopping_items);
shoppingItems.setLayoutManager(new LinearLayoutManager(this));
initializeDataSet();
shoppingItems.setAdapter(shoppingItemsAdapter);
}
private void initializeDataSet() {
dataSet = new ArrayList<>();
RealmResults<ShoppingItem> activeItemResults
= realm.where(ShoppingItem.class).equalTo("completed", false)
.findAllSorted("timestamp", Sort.DESCENDING);
RealmResults<ShoppingItem> inactiveItemResults
= realm.where(ShoppingItem.class).equalTo("completed", true)
.findAllSorted("timestamp", Sort.DESCENDING);
ShoppingItem subheader = new ShoppingItem();
subheader.setTimestamp(-1);
for(ShoppingItem item:activeItemResults) dataSet.add(item);
dataSet.add(subheader);
for(ShoppingItem item:inactiveItemResults) dataSet.add(item);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(resultCode == RESULT_OK) {
initializeDataSet();
shoppingItemsAdapter.notifyDataSetChanged();
}
}
活動的main.xml
android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.github.hathibelagal.shoppinglist.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:src="@drawable/ic_add_24dp"
android:tint="@android:color/white" />
</android.support.design.widget.CoordinatorLayout>
active_item.xml:
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="72dp">
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/item_status"
android:layout_centerVertical="true"
android:layout_alignParentStart="true" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="72dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="@+id/item_name"
android:textColor="@android:color/black" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/item_quantity" />
</LinearLayout>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/item_action"
android:layout_centerVertical="true"
android:layout_alignParentEnd="true"
android:src="@drawable/ic_create_24dp"
android:alpha="0.26" />
</RelativeLayout>
認罪我幫助我!感謝您的提前!
在看一看h6ah4i/android-advancedrecyclerview –
你能爲我的情況提供代碼嗎?我正在嘗試一切,但仍然沒有在我的代碼上工作:( –