我正在使用基本适配器来填充listview中的数据。我需要在适配器类中单击更改图标。问题是我无法控制适配器类中的imageview位置。例如，如果我在音乐文件列表中使用播放/暂停图标，我需要将图标从播放更改为暂停该特定文件。由于基于适配器中位置的imageview控件没有暂停/播放随机文件。任何帮助都将受到赞赏。
修改
我添加了所用布局的图片。 BaseAdapter中的布局有2种布局，其中一种用于显示发件人消息，第二种用于显示收到的消息。我们隐藏了一个基于消息的布局。这里的问题是我们没有对发送器/接收器布局进行正确的控制。我希望现在很清楚。
编辑5/21：
请找到适配器类和布局
适配器
package com.app.adapter;
import android.content.Context;
import android.graphics.Typeface;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.app.R;
import com.app.handler.DatabaseHandler;
import com.app.materialdesign.CircularImageView;
import com.app.materialdesign.DiscreteSeekBar;
import com.app.model.VoiceMessages;
import com.app.util.PrefManager;
import com.app.util.Utilities;
import com.squareup.picasso.Picasso;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.List;
public class ChatAdapter extends BaseAdapter implements MediaPlayer.OnCompletionListener {
private Context context = null;
private LayoutInflater inflater = null;
private String location = null;
List<VoiceMessages> voiceMessageList = null;
private DatabaseHandler sqliteHelper = null;
int possitionOfFile = -1;
MediaPlayer mediaPlayer = null;
private Utilities utils = null;
private Handler durationHandler = new Handler();
private PrefManager pref = null;
private double timeElapsed = 0, finalTime = 0;
FileInputStream fis;
private ViewHolderItem viewHolder = null;
public ChatAdapter(Context context, List<VoiceMessages> voiceMessageList) {
this.context = context;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.voiceMessageList = voiceMessageList;
}
@Override
public int getCount() {
return voiceMessageList.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
view = inflater.inflate(R.layout.chat_adapter, null);
viewHolder = new ViewHolderItem();
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolderItem) view.getTag();
}
viewHolder.textSeparator = (TextView) view.findViewById(R.id.textSeparator);
viewHolder.txtReceiveName = (TextView) view.findViewById(R.id.txtReceiveName);
viewHolder.txtSendTime = (TextView) view.findViewById(R.id.txtSendTime);
viewHolder.seekBarSender = (DiscreteSeekBar) view.findViewById(R.id.seekBarSender);
viewHolder.imgPlaySender = (ImageView) view.findViewById(R.id.imgPlaySender);
viewHolder.txtSenderName = (TextView) view.findViewById(R.id.txtSenderName);
viewHolder.txtReceiveTime = (TextView) view.findViewById(R.id.txtReceiveTime);
viewHolder.txtAudioRemaingreceiverTime = (TextView) view.findViewById(R.id.txtAudioRemaingreceiverTime);
viewHolder.txtAudioRemaingSenderTime = (TextView) view.findViewById(R.id.txtAudioRemaingSenderTime);
viewHolder.dateLayout = (RelativeLayout) view.findViewById(R.id.dateLayout);
viewHolder.senderLayout = (LinearLayout) view.findViewById(R.id.senderLayout);
viewHolder.imgPlayReceiver = (ImageView) view.findViewById(R.id.imgPlayReceiver);
viewHolder.ProgressLayout = (RelativeLayout) view.findViewById(R.id.ProgressLayout);
viewHolder.receiverMainLayout = (LinearLayout) view.findViewById(R.id.receiverMainLayout);
viewHolder.senderMainLayout = (LinearLayout) view.findViewById(R.id.senderMainLayout);
viewHolder.ProgressLayoutReceiver = (RelativeLayout) view.findViewById(R.id.ProgressLayoutReceiver);
viewHolder.seekBarReceiver = (DiscreteSeekBar) view.findViewById(R.id.progressBarReceiver);
viewHolder.imgViewProefileImag = (CircularImageView) view.findViewById(R.id.imgViewProefileImag);
viewHolder.sendContents = (RelativeLayout) view.findViewById(R.id.sendContents);
viewHolder.senderVoiceIcon = (ImageView) view.findViewById(R.id.senderVoiceIcon);
viewHolder.receiverContents = (RelativeLayout) view.findViewById(R.id.receiverContents);
viewHolder.receiverVoiceIcon = (ImageView) view.findViewById(R.id.receiverVoiceIcon);
viewHolder.imgPauseReceiver = (ImageView) view.findViewById(R.id.imgPauseReceiver);
viewHolder.imgPauseSender = (ImageView) view.findViewById(R.id.imgPauseSender);
viewHolder.receiverLayout = (LinearLayout) view.findViewById(R.id.receiverLayout);
possitionOfFile = -1;
possitionOfFile = position;
pref = new PrefManager(context);
utils = new Utilities();
mediaPlayer = new MediaPlayer();
sqliteHelper = new DatabaseHandler(context);
if (voiceMessageList.get(position).getDate() != null && !voiceMessageList.get(position).getDate().isEmpty() && voiceMessageList.get(position).getDate().length() > 0) {
viewHolder.textSeparator.setVisibility(View.VISIBLE);
viewHolder.dateLayout.setVisibility(View.VISIBLE);
viewHolder.textSeparator.setText(voiceMessageList.get(position).getDate());
} else {
viewHolder.dateLayout.setVisibility(View.GONE);
viewHolder.textSeparator.setVisibility(View.GONE);
}
Typeface myTypeface = Typeface.createFromAsset(context.getAssets(), "Roboto-Medium.ttf");
if (voiceMessageList.get(position).getExchange_action().equalsIgnoreCase("Receive")) {
if (voiceMessageList.get(position).getStatus().equalsIgnoreCase("False")) {
viewHolder.imgViewProefileImag.setVisibility(View.VISIBLE);
} else {
viewHolder.imgViewProefileImag.setVisibility(View.INVISIBLE);
}
viewHolder.receiverMainLayout.setVisibility(View.VISIBLE);
viewHolder.senderMainLayout.setVisibility(View.GONE);
viewHolder.txtReceiveTime.setText(voiceMessageList.get(position).getCurrentTime().replace("m", "M"));
viewHolder.txtReceiveName.setText(voiceMessageList.get(position).getUser_display_name());
location = voiceMessageList.get(position).getVoice_file_path();
if (voiceMessageList.get(position).getTime_of_recorded_voice().length() == 1) {
viewHolder.txtAudioRemaingreceiverTime.setText("0:" + "0" + voiceMessageList.get(position).getTime_of_recorded_voice());
} else {
viewHolder.txtAudioRemaingreceiverTime.setText("0:" + voiceMessageList.get(position).getTime_of_recorded_voice());
}
} else if (voiceMessageList.get(position).getExchange_action().equalsIgnoreCase("Send")) {
viewHolder.receiverMainLayout.setVisibility(View.GONE);
viewHolder.senderMainLayout.setVisibility(View.VISIBLE);
viewHolder.txtSendTime.setText(voiceMessageList.get(position).getCurrentTime());
location = voiceMessageList.get(position).getVoice_file_path();
if (voiceMessageList.get(position).getTime_of_recorded_voice() != null && !voiceMessageList.get(position).getTime_of_recorded_voice().isEmpty()) {
viewHolder.txtAudioRemaingSenderTime.setText(voiceMessageList.get(position).getTime_of_recorded_voice());
} else {
viewHolder.txtAudioRemaingSenderTime.setText("00:00");
}
}
viewHolder.txtSendTime.setTypeface(myTypeface);
viewHolder.imgPlaySender.setTag(position);
viewHolder.senderMainLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
v.setTag(position);
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
viewHolder.imgPauseSender.setVisibility(View.GONE);
viewHolder.imgPlaySender.setVisibility(View.VISIBLE);
viewHolder.imgPauseSender.requestFocus();
viewHolder.imgPlaySender.requestFocus();
} else {
mediaPlayer.reset();
mediaPlayer = MediaPlayer.create(context, Uri.parse(voiceMessageList.get(position).getVoice_file_path()));
mediaPlayer.start();
int clickedPosition = (int) v.getTag();
viewHolder.imgPauseSender.requestFocus();
viewHolder.imgPlaySender.requestFocus();
if (clickedPosition == position) {
viewHolder.imgPauseSender.setVisibility(View.VISIBLE);
viewHolder.imgPlaySender.setVisibility(View.GONE);
}
}
}
});
return view;
}
@Override
public void onCompletion(MediaPlayer mp) {
mediaPlayer.release();
mediaPlayer = null;
}
static class ViewHolderItem {
private TextView textSeparator = null;
private TextView txtReceiveName = null;
private TextView txtSendTime = null;
private DiscreteSeekBar seekBarSender = null;
private ImageView imgPlaySender = null;
private TextView txtSenderName = null;
private TextView txtReceiveTime = null;
private TextView txtAudioRemaingreceiverTime = null;
private TextView txtAudioRemaingSenderTime = null;
private RelativeLayout dateLayout = null;
private LinearLayout senderLayout = null;
private ImageView imgPlayReceiver = null;
private RelativeLayout ProgressLayout = null;
private LinearLayout receiverMainLayout = null;
private LinearLayout senderMainLayout = null;
private RelativeLayout ProgressLayoutReceiver = null;
private DiscreteSeekBar seekBarReceiver = null;
private CircularImageView imgViewProefileImag = null;
private RelativeLayout sendContents = null;
private ImageView senderVoiceIcon = null;
private RelativeLayout receiverContents = null;
private ImageView receiverVoiceIcon = null;
private ImageView imgPauseReceiver = null;
private ImageView imgPauseSender = null;
private LinearLayout receiverLayout = null;
}
}
布局
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginLeft="10dp">
<LinearLayout
android:id="@+id/senderMainLayout"
android:layout_width="335dp"
android:layout_height="wrap_content"
android:layout_below="@+id/receiverMainLayout"
android:layout_marginLeft="25dp"
android:orientation="horizontal"
android:visibility="visible">
<LinearLayout
android:id="@+id/senderDummyImgLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<com.app.materialdesign.CircularImageView
android:id="@+id/imgViewDummySender"
android:layout_width="70dp"
android:layout_height="40dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_weight="1"
android:background="@drawable/attach_contact_pressed"
android:visibility="invisible"
app:border="true"
app:border_color="#eeeeee"
app:border_width="4dp"
app:shadow="true" />
</LinearLayout>
<LinearLayout
android:id="@+id/senderLayout"
android:layout_width="match_parent"
android:layout_height="47dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="20dp"
android:layout_marginTop="5dp"
android:layout_weight="2"
android:background="@drawable/chat"
android:gravity="left"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:orientation="horizontal"
android:weightSum="4.5">
<TextView
android:id="@+id/txtSenderName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_marginLeft="25dp"
android:layout_marginTop="10dp"
android:text="Midhun"
android:textSize="13sp"
android:visibility="invisible" />
<TextView
android:id="@+id/txtSendTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:layout_marginRight="15dp"
android:layout_marginTop="10dp"
android:layout_weight="4.5"
android:gravity="right"
android:text="12:30AM"
android:textColor="#ffffff"
android:textSize="10sp" />
</LinearLayout>
<LinearLayout
android:id="@+id/sendTimeLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:orientation="vertical">
</LinearLayout>
<RelativeLayout
android:id="@+id/sendContents"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="-30dp">
<ImageView
android:id="@+id/senderVoiceIcon"
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_marginBottom="15dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="8dp"
android:background="@drawable/ic_record_voice_over_white" />
<RelativeLayout
android:id="@+id/ProgressLayout"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignTop="@+id/senderVoiceIcon"
android:layout_marginLeft="13dp"
android:layout_marginStart="13dp"
android:layout_marginTop="-3dp"
android:layout_toEndOf="@+id/senderVoiceIcon"
android:background="@drawable/ic_panorama_fish_eye_white">
<ImageView
android:id="@+id/imgPlaySender"
android:layout_width="9.5dp"
android:layout_height="9.5dp"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="4dp"
android:background="@drawable/ic_play_blue"
android:visibility="visible" />
<ImageView
android:id="@+id/imgPauseSender"
android:layout_width="9.5dp"
android:layout_height="9.5dp"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="5dp"
android:background="@drawable/fa_pause"
android:visibility="gone" />
</RelativeLayout>
<com.app.materialdesign.DiscreteSeekBar
android:id="@+id/seekBarSender"
android:layout_width="153dp"
android:layout_height="wrap_content"
android:layout_marginLeft="-10dp"
android:layout_toEndOf="@+id/ProgressLayout"
android:layout_toRightOf="@+id/ProgressLayout"
app:dsb_allowTrackClickToDrag="false"
app:dsb_indicatorColor="#FFFFFF"
app:dsb_indicatorFormatter="\ %d"
app:dsb_indicatorTextAppearance="@style/CustomFloaterTextAppearance"
app:dsb_progressColor="#FFFFFF"
app:dsb_rippleColor="@color/BlueButton"
app:dsb_trackColor="#000000" />
<TextView
android:id="@+id/txtAudioRemaingSenderTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/seekBarSender"
android:layout_gravity="left"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="-10dp"
android:layout_toEndOf="@+id/ProgressLayout"
android:layout_toRightOf="@+id/ProgressLayout"
android:text="0:23"
android:textColor="@color/VoiceDuration"
android:textSize="8sp" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/senderImageLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="2dp"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:visibility="gone">
<com.app.materialdesign.CircularImageView
android:id="@+id/senderImgView"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_weight="1"
android:background="@drawable/attach_contact_pressed"
app:border="true"
app:border_color="#eeeeee"
app:border_width="4dp"
app:shadow="true" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
答案 0 :(得分：0)
您可以使用setTag（）和getTag（）来获取适配器中项目的点击位置。
例如：
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView= layoutInflater.inflate(R.layout.item, null);
ImageView ivPlay=(ImageView)convertView.findViewById(R.id.imageView1);
ivPlay.setTag(position); // set position in tag
ivPlay.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int clickedPosition = (int) v.getTag(); // get position from tag
// Here you can perform operation based on position.
}
});
return convertView;
}
答案 1 :(得分：0)
只需更改此位置上对象的某些标志，然后调用notifyDatasetChanged（）。这将调用重绘项目，然后在getView中检查该标志并相应地绘制图像。 如果您将此项目滚出屏幕并返回，则无法直接在imageView中更改图像。
答案 2 :(得分：0)
嗯，你有很多代码，我写了你需要的任何必要的东西来回答你的问题..介意代码评论
int playingItemPosition=-1;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
|ViewHolderItem viewHolder;
if (convertView == null) {
viewHolder = new ViewHolderItem();
LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.adapter_layout, null);
viewHolder.title = (TextView) convertView.findViewById(R.id.title);
viewHolder.receiverMainLayout = (LinearLayout) convertView.findViewById(R.id.receiverMainLayout);
viewHolder.imgPauseSender = (ImageView) convertView.findViewById(R.id.imgPauseSender);
//write all findViewById() here
viewHolder.imgPlaySender = (ImageView) convertView.findViewById(R.id.imgPlaySender);
convertView.setTag(viewHolder);
//setting listener here
viewHolder.receiverMainLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int pos = (int) v.getTag();
playingItemPosition = pos;//new item clicked and stop o
notifyDataSetChanged();//refresh views
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
viewHolder.imgPauseSender.requestFocus();
viewHolder.imgPlaySender.requestFocus();
} else {
mediaPlayer.reset();
mediaPlayer = MediaPlayer.create(context, Uri.parse(voiceMessageList.get(playingItemPosition).getVoice_file_path()));
mediaPlayer.start();
viewHolder.imgPauseSender.requestFocus();
viewHolder.imgPlaySender.requestFocus();
}
}
});
} else {
viewHolder = (ViewHolderItem) convertView.getTag();
}
//check clicked position and change icon accordingly.
if (playingItemPosition != -1) {
if (position == playingItemPosition) {
viewHolder.imgPauseSender.setVisibility(View.GONE);
viewHolder.imgPlaySender.setVisibility(View.VISIBLE);
} else {
viewHolder.imgPauseSender.setVisibility(View.VISIBLE);
viewHolder.imgPlaySender.setVisibility(View.GONE);
}
}
//set values to your items
viewHolder.receiverMainLayout.setTag(position);
return convertView;
}