I am using a Recyclerview inside the coordinator layout.In the Main.Xml i have a save button and Edit Text field. So On click to save Button i need to pass the edit text value to next Xml that have RecyclerView. But run time error occurs. What is really happening to this code?
MainActivity:
public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter.OnItemClickListener {
EditText textIn,txtHeading;
Button buttonAdd,btnsave;
LinearLayout container;
private RecyclerView myRecyclerView;
private LinearLayoutManager linearLayoutManager;
private RecyclerViewAdapter myRecyclerViewAdapter;
private RecyclerView.LayoutManager recyclermanager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myRecyclerView = (RecyclerView)findViewById(R.id.recyclerView_builderxml);
linearLayoutManager =
new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
myRecyclerViewAdapter = new RecyclerViewAdapter(this);
myRecyclerViewAdapter.setOnItemClickListener(this);
myRecyclerView.setAdapter(myRecyclerViewAdapter);
myRecyclerView.setLayoutManager(linearLayoutManager);
txtHeading = (EditText)findViewById(R.id.heading);
btnsave =(Button) findViewById(R.id.btn_save);
btnsave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String newName = txtHeading.getText().toString();
Intent intent = new Intent(getApplicationContext(),BuilderPage.class);
myRecyclerViewAdapter.add(0,newName);
startActivity(intent);
Toast.makeText(MainActivity.this,"You added" +newName.toUpperCase()+ "in your view",Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onItemClick(RecyclerViewAdapter.ItemHolder item, int position) {
}
}
BuilderPage
/*
* Created by niroj on 8/29/16.
*/
public class BuilderPage extends AppCompatActivity {
@BindView(R.id.edittxtsurvey)
EditText editTxtsurveyname;
@BindView(R.id.toolbar_builderxml)
Toolbar toolbar1;
@BindView(R.id.recyclerView_builderxml)
RecyclerView recyclerView_Builder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.builder_layout);
ButterKnife.bind(this);
setSupportActionBar(toolbar1);
getSupportActionBar().setDisplayShowTitleEnabled(false);
// display menu incons from menu_main XML
}
}
And My Builder.XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView_builderxml"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.AppBarLayout
android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar_builderxml"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
This is my adapterclass for recycler
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ItemHolder> {
private List<String> HeadingName;
private OnItemClickListener onItemClickListener;
private LayoutInflater layoutInflater;
public RecyclerViewAdapter(Context context){
layoutInflater = LayoutInflater.from(context);
HeadingName = new ArrayList<String>();
}
@Override
public RecyclerViewAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = layoutInflater.inflate(R.layout.list_item, parent, false);
return new ItemHolder(itemView, this);
}
@Override
public void onBindViewHolder(RecyclerViewAdapter.ItemHolder holder, int position) {
holder.setItemName(HeadingName.get(position));
}
@Override
public int getItemCount() {
return HeadingName.size();
}
public void setOnItemClickListener(OnItemClickListener listener){
onItemClickListener = listener;
}
public OnItemClickListener getOnItemClickListener(){
return onItemClickListener;
}
public interface OnItemClickListener{
public void onItemClick(ItemHolder item, int position);
}
public void add(int location, String iName){
HeadingName.add(location, iName);
notifyItemInserted(location);
}
public static class ItemHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private RecyclerViewAdapter parent;
TextView textHeadingname;
public ItemHolder(View itemView, RecyclerViewAdapter parent) {
super(itemView);
itemView.setOnClickListener(this);
this.parent = parent;
textHeadingname = (TextView) itemView.findViewById(R.id.title_name);
}
public void setItemName(CharSequence name){
textHeadingname.setText(name);
}
public CharSequence getItemName(){
return textHeadingname.getText();
}
@Override
public void onClick(View v) {
final OnItemClickListener listener = parent.getOnItemClickListener();
if(listener != null){
listener.onItemClick(this, getPosition());
}
}
}
}
This is my manifest
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme" >
<!--android:theme="@style/Theme.AppCompat.Light"--> >
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"
android:theme ="@android:style/Theme.Black.NoTitleBar.Fullscreen"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
