Comment afficher Toast dans une classe étendue par BaseAdapter Get View, méthode

Je vais avoir des problème de montrer Toast Message lorsque je clique sur un bouton dans une Vue de liste.
Le problème est que j'ai une classe personnalisée prolongée par BaseAdapter j'ai une méthode GetView
Je veux montrer un toast Message à partir de ce message

Qui suit est ma Listview Ligne Xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/tools"
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
app:context=".HomeActivity" >
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TableRow
android:id="@+id/tableRow_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:ignore="UselessParent" >
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<TableRow
android:id="@+id/tableRow_Header_laugh"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#818085" >
<RelativeLayout
android:id="@+id/relative_header"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#818085" >
<ImageView
android:id="@+id/UserIconPic_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_weight="0.4"
android:src="@drawable/ic_launcher"
app:ignore="ObsoleteLayoutParam,ContentDescription" />
<Button
android:id="@+id/btn_Vote_laugh"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_weight=".4"
android:text="VOTE"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
<TextView
android:id="@+id/txt_number_of_vote_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/btn_Vote_laugh"
android:layout_alignBottom="@+id/btn_Vote_laugh"
android:layout_toRightOf="@+id/UserIconPic_laugh"
android:layout_weight=".4"
android:textAppearance="?android:attr/textAppearanceMedium"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_MainText_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/txt_MainText_laugh"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/whatweare_about_main"
android:textAppearance="?android:attr/textAppearanceMedium"
app:ignore="HardcodedText" />
</TableRow>
<TableRow
android:id="@+id/tableRow_Footer_laugh"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="@+id/relative_footer"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#bababa" >
<Button
android:id="@+id/btn_Share_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Share"
app:ignore="HardcodedText" />
<ImageButton
android:id="@+id/btn_facebook_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="@+id/btn_twitter_laugh"
android:src="@drawable/pic2"
app:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btn_twitter_laugh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/btn_facebook_laugh"
android:src="@drawable/pic3"
app:ignore="ContentDescription" />
</RelativeLayout>
</TableRow>
</TableLayout>
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:ignore="UselessParent" >
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<TableRow
android:id="@+id/tableRow_header_light"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="@+id/RelativeLayout02"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#818085" >
<ImageView
android:id="@+id/UserIconPic_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_weight="0.4"
android:src="@drawable/ic_launcher"
app:ignore="ObsoleteLayoutParam,ContentDescription" />
<Button
android:id="@+id/btn_Vote_light"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_weight=".4"
android:text="VOTE"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
<TextView
android:id="@+id/txt_vote_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/btn_Vote_light"
android:layout_alignBottom="@+id/btn_Vote_light"
android:layout_toRightOf="@+id/UserIconPic_light"
android:layout_weight=".4"
android:textAppearance="?android:attr/textAppearanceMedium"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_content_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center"
android:maxLength="300"
android:text="@string/Main_laugh"
android:textAppearance="?android:attr/textAppearanceSmall"
app:ignore="HardcodedText" />
<ImageView
android:id="@+id/light_image"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
app:ignore="ContentDescription" />
</FrameLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_Footer_light"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="@+id/RelativeLayout01"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#bababa" >
<Button
android:id="@+id/Btn_Share_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Share"
app:ignore="HardcodedText" />
<ImageButton
android:id="@+id/btn_facebook_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="@+id/btn_twitter_light"
android:src="@drawable/pic2"
app:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btn_twitter_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/btn_facebook_light"
android:src="@drawable/pic3"
app:ignore="ContentDescription" />
</RelativeLayout>
</TableRow>
</TableLayout>
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:ignore="UselessParent" >
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<TableRow
android:id="@+id/tableRow_header_fun"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="@+id/RelativeLayout04"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#818085" >
<ImageView
android:id="@+id/UserIconPic_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_weight="0.4"
android:src="@drawable/ic_launcher"
app:ignore="ObsoleteLayoutParam,ContentDescription" />
<Button
android:id="@+id/btn_vote_fun"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_weight=".4"
android:text="VOTE"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
<TextView
android:id="@+id/txt_vote_number_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/btn_vote_fun"
android:layout_alignBottom="@+id/btn_vote_fun"
android:layout_toRightOf="@+id/UserIconPic_fun"
android:layout_weight=".4"
android:textAppearance="? android:attr/textAppearanceMedium"
app:ignore="ObsoleteLayoutParam,HardcodedText" />
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_Content_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="@+id/relativelayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="@+id/image_fun"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:adjustViewBounds="true"
android:baselineAlignBottom="true"
android:cropToPadding="true"
app:ignore="ContentDescription" />
<TextView
android:id="@+id/myImageViewText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/image_fun"
android:layout_alignLeft="@+id/image_fun"
android:layout_alignRight="@+id/image_fun"
android:layout_alignTop="@+id/image_fun"
android:layout_margin="1dp"
android:gravity="center"
android:text="@string/main_light"
android:textColor="#000000" />
</RelativeLayout>
</TableRow>
<TableRow
android:id="@+id/tableRow_Footer_fun"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="@+id/RelativeLayout03"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="#bababa" >
<Button
android:id="@+id/Btn_share_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Share"
app:ignore="HardcodedText" />
<ImageButton
android:id="@+id/btn_facebook_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="@+id/btn_twitter_fun"
android:src="@drawable/pic2"
app:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btn_twitter_fun"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/btn_facebook_fun"
android:src="@drawable/pic3"
app:ignore="ContentDescription" />
</RelativeLayout>
</TableRow>
</TableLayout>
</RelativeLayout>
</TableRow>
</TableLayout>
</ScrollView>

Mon CustomeAdapter code de la Classe

 package com.example.laysapp.ContentListView;
import java.util.ArrayList;
import java.util.List;
import com.example.laysapp.R;
import com.example.laysapp.RegisteredUser.LighterShare;
import android.app.Application;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.webkit.WebView.FindListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class ContentItemAdapter extends BaseAdapter {
private final List<Content_Items> items;
public ContentItemAdapter(final Context context, final int itemResId,
final ArrayList<Content_Items> items2) {
this.items = items2;
}
@Override
public int getCount() {
//TODO Auto-generated method stub
return items.size();
}
@Override
public Object getItem(int arg0) {
//TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
//TODO Auto-generated method stub
return 0;
}
@SuppressWarnings("null")
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final Content_Items item = this.items.get(position);
View itemView = null;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) parent.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
itemView = inflater.inflate(R.layout.contentlistrow, null);
} else {
itemView = convertView;
}
//Set the text of the Laugh Row Start
TextView txtLaugh_Vote = (TextView) itemView
.findViewById(R.id.txt_number_of_vote_laugh);
txtLaugh_Vote.setText(item.getLaughNo_Vote());
TextView txtlaugh_Content = (TextView) itemView
.findViewById(R.id.txt_MainText_laugh);
txtlaugh_Content.setText(item.getLaughContent());
ImageView imgView_Laugh_UserPic = (ImageView) itemView
.findViewById(R.id.UserIconPic_laugh);
imgView_Laugh_UserPic.setImageBitmap(item.getLaughtUserPic());
//Set the text of the Laugh Row End
//Setting of Light Row Start
TextView txtLight_Vote = (TextView) itemView
.findViewById(R.id.txt_vote_light);
txtLight_Vote.setText(item.getLaughNo_Vote());
TextView txtlight_Content = (TextView) itemView
.findViewById(R.id.textView1);
txtlight_Content.setText(item.getLaughContent());
ImageView imgView_Light_UserPic = (ImageView) itemView
.findViewById(R.id.UserIconPic_light);
imgView_Light_UserPic.setImageBitmap((item.getLightStoriesUserPic()));
ImageView imgView_LightContent_Image = null;
//Check weather ContentImage is Available For Light
String Check = item.getIsLightContentAvaiable();
if (Check == "yes") {
imgView_LightContent_Image = (ImageView) imgView_LightContent_Image
.findViewById(R.id.light_image);
imgView_LightContent_Image.setImageBitmap(item
.getLightStoriesContentImagePic());
}
//Setting of Light Row End
//Set the text of the Funto Row Start
TextView txtfunto_Vote = (TextView) itemView
.findViewById(R.id.txt_vote_number_fun);
txtfunto_Vote.setText(item.getLaughNo_Vote());
TextView txtfunto_Content = (TextView) itemView
.findViewById(R.id.myImageViewText);
txtfunto_Content.setText(item.getLaughContent());
//Set the text of the Funto Row End
ImageView imgView_funto_UserPic = (ImageView) itemView
.findViewById(R.id.UserIconPic_fun);
imgView_funto_UserPic.setImageBitmap(item.getfuntoUserPic());
ImageView imgView_funto_ContentPic = (ImageView) itemView
.findViewById(R.id.image_fun);
imgView_funto_ContentPic.setImageBitmap(item.getfuntoContentImagePic());
Button MainVote_Laugh = null;
MainVote_Laugh = (Button) MainVote_Laugh
.findViewById(R.id.btn_Vote_laugh);
MainVote_Laugh.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//TODO Auto-generated method stub
Toast.makeText(getApplication(), "Clicked Laugh Vote", Toast.LENGTH_SHORT).Show();
}
});
return itemView;
}
}

source d'informationauteur Aftab Ali

Remplacer cette ligne:

Toast.makeText(getApplication(), "Clicked Laugh Vote", Toast.LENGTH_SHORT).show();

avec cette ligne:

 Toast.makeText(v.getContext(), "Clicked Laugh Vote", Toast.LENGTH_SHORT).show();

4

Vous avez un contexte de droit dans le constructeur. créer une classe de niveau variable de Contexte-dire ctx. à l'intérieur du constructeur d'écrire
```
this.ctx = context;
```
enfin remplacer getApplication() dans
```
Toast.makeText(getApplication(), "Clicked Laugh Vote", Toast.LENGTH_SHORT).Show();
```
avec ctx.
1

Vous pouvez également utiliser parent.getContext(), le code complet de pain grillé est comme ci-dessous
```
Toast.makeText(parent.getContext(), "view clicked", Toast.LENGTH_SHORT).show();
```
0

Que vous passer de votre MainActivity les changements de contexte, vous devez utiliser votre AdapterClass > ViewHolderClass > ViewHolder l'argument du constructeur pour les mettre en contexte pour adaptateur.

Ici est un exemple.
```
    public MyViewHolder(final View itemView) {
super(itemView);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(itemView.getContext(),"Hi",Toast.LENGTH_LONG);
}
});
}
```
sinon, vous pouvez également passer contexte à un argument du constructeur pour toutes les autres classes n'ayant pas d'activité.

exemple.
```
public class MyClass {
Context c;
public MyClass(Context context) {
c = context;
}}
```

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