标签：android android-listview android-studio android-intent android-checkbox
我正在尝试使用按钮和对话框复选框进行Android多选项目,并在列表视图中显示所选项目(如图片中所示)而不是按钮(当前显示在按钮中：请参考图片)
我能够在下面的按钮中显示接收器,但我想在列表视图中显示相同的内容：
当前从对话框中选择后显示复选框,如：
"Receiver1, Receiver2"
我想要：
image of Receiver1 with Receiver1 Name
image of Receiver2 with Receiver2 Name
SendServiceActivity.java
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.Layout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.ImageView;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
public class SendServiceActivity extends AppCompatActivity implements View.OnClickListener{
protected Button selectReceiversBtn;
protected CharSequence[] receivers = {
"Receiver1", "Receiver2", "Receivers3"};
protected ArrayList<CharSequence> selectedReceivers = new ArrayList<>();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
selectReceiversBtn = (Button) findViewById(R.id.select_receivers);
selectReceiversBtn.setOnClickListener((View.OnClickListener) this);
}
@Override
public void onClick(View view) {
switch(view.getId()) {
case R.id.select_receivers:
showSelectReceiversDialog();
break;
default:
break;
}
}
protected void onChangeSelectedReceivers() {
StringBuilder stringBuilder = new StringBuilder();
for(CharSequence receivers : selectedReceivers)
stringBuilder.append(receivers + ",");
selectReceiversBtn.setText(stringBuilder.toString());
}
protected void showSelectReceiversDialog() {
boolean[] checkedReceivers = new boolean[receivers.length];
int count = receivers.length;
for(int i = 0; i < count; i++)
checkedReceivers[i] = selectedReceivers.contains(receivers[i]);
DialogInterface.OnMultiChoiceClickListener receiversDialogListener = new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if(isChecked)
selectedReceivers.add(receivers[which]);
else
selectedReceivers.remove(receivers[which]);
onChangeSelectedReceivers();
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder
.setTitle("Select Receivers")
.setMultiChoiceItems(receivers, checkedReceivers, receiversDialogListener)
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
}
activity_main.xml中
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:text="Select Receivers" />
<Button
android:id="@+id/select_receivers"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:text="- None Selected -" />
</LinearLayout>
解决方法:
以下是您的要求的完整源代码：
mainactivity.class
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.text.Layout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.ImageView;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
public class MainActivity extends Activity implements View.OnClickListener{
ArrayAdapter<CharSequence> adapter;
ListView listView1;
protected Button selectReceiversBtn;
protected CharSequence[] receivers = {
"Receiver1", "Receiver2", "Receivers3"};
protected ArrayList<CharSequence> selectedReceivers = new ArrayList<>();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView1=(ListView) findViewById(R.id.listView1);
selectReceiversBtn = (Button) findViewById(R.id.select_receivers);
selectReceiversBtn.setOnClickListener((View.OnClickListener) this);
// String[] your_array = {"a","b","c"}
adapter = new ArrayAdapter<CharSequence>(this,
android.R.layout.simple_list_item_multiple_choice, selectedReceivers);
listView1.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listView1.setAdapter(adapter);
}
@Override
public void onClick(View view) {
switch(view.getId()) {
case R.id.select_receivers:
showSelectReceiversDialog();
break;
default:
break;
}
}
protected void onChangeSelectedReceivers() {
StringBuilder stringBuilder = new StringBuilder();
for(CharSequence receivers : selectedReceivers)
stringBuilder.append(receivers + ",");
adapter.notifyDataSetChanged();
//selectReceiversBtn.setText(stringBuilder.toString());
}
protected void showSelectReceiversDialog() {
boolean[] checkedReceivers = new boolean[receivers.length];
int count = receivers.length;
for(int i = 0; i < count; i++)
checkedReceivers[i] = selectedReceivers.contains(receivers[i]);
DialogInterface.OnMultiChoiceClickListener receiversDialogListener = new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if(isChecked)
selectedReceivers.add(receivers[which]);
else
selectedReceivers.remove(receivers[which]);
onChangeSelectedReceivers();
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder
.setTitle("Select Receivers")
.setMultiChoiceItems(receivers, checkedReceivers, receiversDialogListener)
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
}
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:text="Select Receivers" />
<Button
android:id="@+id/select_receivers"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:text="- None Selected -" />
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
复制并粘贴上面的代码..当您签入对话框时,它会自动添加到列表视图中
标签：android,android-listview,android-studio,android-intent,android-checkbox 来源： https://codeday.me/bug/20190516/1116592.html
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