你好朋友，我正在使用数组采用器的自定义列表视图，我的问题是我试图以编程方式更改文本颜色，但对自定义列表视图没有任何影响，请帮助我，我是初学者，我需要你的帮助，我不知道不知道如何解决此问题，您可以在下面看到我的代码，现在检查这里的问题是什么，在此先感谢您的帮助！ 这是我的代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_margin="0dp"
android:padding="0dp"
android:descendantFocusability="blocksDescendants"
android:id="@+id/layout"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="20dp"
android:textAlignment="center"
android:layout_height="20dp"
android:textColor="@color/darkcolor"
android:id="@+id/versenumber"
android:background="@drawable/texview_design"
android:text="1"/>
<TextView
android:layout_width="match_parent"
android:id="@+id/verse"
android:layout_height="wrap_content"
android:layout_weight="2"
android:textColor="@color/darkcolor"
android:textSize="23sp"
android:text="@string/versedisplay"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_gravity="top"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:id="@+id/share"
android:layout_gravity="left"
android:layout_marginTop="10dp"
android:src="@drawable/ic_share_black_24dp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ToggleButton
android:id="@+id/adbookmark"
android:layout_width="18dp"
android:layout_height="18dp"
android:layout_gravity="right"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:background="@drawable/toggle_selector"
android:textOff=""
android:textOn="" />
</LinearLayout>
</LinearLayout>
自定义采用者：
package bible.swordof.God;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.opengl.Visibility;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.provider.CalendarContract;
import android.speech.tts.TextToSpeech;
import android.support.v4.content.ContextCompat;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
import com.amulyakhare.textdrawable.TextDrawable;
import com.amulyakhare.textdrawable.util.ColorGenerator;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import es.dmoral.toasty.Toasty;
import petrov.kristiyan.colorpicker.ColorPicker;
import static android.content.Context.MODE_PRIVATE;
import static android.database.sqlite.SQLiteDatabase.CONFLICT_NONE;
import static android.icu.lang.UCharacter.GraphemeClusterBreak.T;
import static android.icu.lang.UCharacter.GraphemeClusterBreak.V;
import static android.support.constraint.Constraints.TAG;
import static android.support.v4.content.ContextCompat.createDeviceProtectedStorageContext;
import static android.support.v4.content.ContextCompat.getColor;
import static android.support.v4.content.ContextCompat.startActivity;
import static android.view.View.getDefaultSize;
public class FullverseAdopter extends ArrayAdapter<String> {
private ALLVERSE activity;
private List<String> versenumber;
private List<String>verseid;
private List<String> verselist;
private List<String> refernce;
TextToSpeech textToSpeech;
private DatabaseHelper mDBHelper;
private SQLiteDatabase mDb;
private String selectcolor;
ArrayList<String>colors;
Context context;
public FullverseAdopter(ALLVERSE context, int resource, List<String> versenumber, List<String> verselist, List<String> refernce, List<String>verseid) {
super(context, resource);
this.activity = context;
this.versenumber = versenumber;
this.verselist = verselist;
this.refernce = refernce;
this.verseid=verseid;
}
@Override
public int getCount() {
return versenumber.size();
}
@Override
public String getItem(int position) {
return versenumber.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, final ViewGroup parent) {
final ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
// If holder not exist then locate all view from UI file.
if (convertView == null) {
// inflate UI from XML file
convertView = inflater.inflate(R.layout.versedisplayrow, parent, false);
// get all UI view
holder = new ViewHolder(convertView);
// set tag for holder
holder.versenumber = (TextView) convertView.findViewById(R.id.versenumber);
holder.verselist = (TextView) convertView.findViewById(R.id.verse);
//COLOR NOT CHANGED here
holder.verselist.setTextColor(Color.parseColor("#fe00fb"));
/* holder.addfavoruite=(ToggleButton)convertView.findViewById(R.id.adbookmark);*/
convertView.setTag(holder);
} else {
// if holder created, get tag from view
holder = (ViewHolder) convertView.getTag();
}
colors=new ArrayList<>();
colors.add("#e0e0eb");
colors.add("#ccffff");
colors.add("#ffe6ff");
colors.add("#ffffcc");
colors.add("#ccffcc");
colors.add("#e6f2ff");
holder.versenumber.setText(versenumber.get(position));
holder.verselist.setText(verselist.get(position));
//check if id is exits in db
if(CheckIsDataAlreadyInDBorNot("highlight","verseid",verseid.get(position)))
{
if(verseid.get(position).equals(verseid.get(position))){
holder.linearLayout.setBackgroundColor(Color.parseColor("#e6f2ff"));
}
}
//check if is in favourite
if(Checkisfavourite("favourite","versenumber",versenumber.get(position)))
{
if(versenumber.get(position).equals(versenumber.get(position))){
holder.addfavoruite.setChecked(true);
}
}
holder.linearLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(CheckIsDataAlreadyInDBorNot("highlight","verseid",verseid.get(position)))
{
if(verseid.get(position).equals(verseid.get(position))){
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
long delete= mDb.delete("highlight","verseid=?",new String[]{verseid.get(position)});
}
}else {
Toast.makeText(activity, "NO HIGHLIGHTS FOR REMOVE", Toast.LENGTH_SHORT).show();
}
// holder.linearLayout.setBackgroundColor(selectcolor);
}
});
//here color picker dialog popup for chosing color
holder.linearLayout.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
//Toasty.success(activity, "PICK COLOR", Toast.LENGTH_SHORT, true).show();
Vibrator vibe = (Vibrator)activity.getSystemService(Context.VIBRATOR_SERVICE);
vibe.vibrate(100);
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
ContentValues contentValues=new ContentValues();
contentValues.put("verseid",verseid.get(position));
final long check=mDb.insert("highlight",null,contentValues);
//id get
//postion
//Toast.makeText(activity, ""+getItemId(position), Toast.LENGTH_SHORT).show();
ColorPicker colorPicker = new ColorPicker(activity);
colorPicker.setColors(colors).setColumns(4).setTitle("HIGHLIGHT VERSE").setRoundColorButton(true).setOnChooseColorListener(new ColorPicker.OnChooseColorListener() {
@Override
public void onChooseColor(int position, int color) {
holder.linearLayout.setBackgroundColor(Color.parseColor(colors.get(position)));
}
@Override
public void onCancel() {
}
}).show();
return false;
}
});
/*holder.verselist.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
holder.verselist.setBackgroundColor(Color.parseColor("#e0e0eb"));
return false;
}
});*/
//share verse
holder.share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toasty.info(activity, "Sharing a verse.", Toast.LENGTH_SHORT, true).show();
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, refernce.get(position) + ":" + versenumber.get(position) + '\n' + verselist.get(position));
sendIntent.setType("text/plain");
activity.startActivity(sendIntent);
}
});
//add in favourite
holder.addfavoruite.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
ContentValues contentValues=new ContentValues();
contentValues.put("id",verseid.get(position));
contentValues.put("bookname",refernce.get(position));
contentValues.put("versenumber",versenumber.get(position));
contentValues.put("verse",verselist.get(position));
long check=mDb.insert("favourite",null,contentValues);
Log.d("MY_TAG","DB IS NOW "+check);
Toasty.success(activity, "Added in favouite", Toast.LENGTH_SHORT, true).show();
}else {
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
long delete= mDb.delete("favourite","id=?",new String[]{verseid.get(position)});
Toasty.error(activity, "Remove in favouite", Toast.LENGTH_SHORT, true).show();
}
}
});
/* textToSpeech = new TextToSpeech(activity, new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
result = textToSpeech.setLanguage(Locale.ENGLISH);
} else {
Toast.makeText(activity, "YOUR DEVICE NOT SUPPORTED", Toast.LENGTH_SHORT).show();
}
}
});
*/
//My toggle button
/* holder.speakverse.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(activity, "I AM CLICKED", Toast.LENGTH_SHORT).show();
if (result == TextToSpeech.LANG_NOT_SUPPORTED || result == TextToSpeech.LANG_MISSING_DATA) {
Toast.makeText(activity, "Language not supported or Missing", Toast.LENGTH_SHORT).show();
} else {
textToSpeech.speak(verselist.get(position), TextToSpeech.QUEUE_FLUSH, null);
}
}
});*/
return convertView;
}
static class ViewHolder {
private TextView versenumber;
private TextView verselist;
private ImageView share;
private ToggleButton addfavoruite;
private ImageView speakverse;
private LinearLayout linearLayout;
public ViewHolder(View v) {
versenumber = (TextView) v.findViewById(R.id.versenumber);
verselist = (TextView) v.findViewById(R.id.verse);
share = (ImageView) v.findViewById(R.id.share);
/*speakverse = (ImageView) v.findViewById(R.id.speakverse);*/
/* addfavoruite=(ToggleButton)v.findViewById(R.id.adbookmark);*/
linearLayout=(LinearLayout)v.findViewById(R.id.layout);
}
}
public boolean CheckIsDataAlreadyInDBorNot(String TableName, String dbfield, String fieldValue) {
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getReadableDatabase();
String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue;
Cursor cursor = mDb.rawQuery(Query, null);
if(cursor.getCount() <= 0){
cursor.close();
// Toast.makeText(activity, "false", Toast.LENGTH_SHORT).show();
return false;
}else {
// Toast.makeText(activity, "TRUE", Toast.LENGTH_SHORT).show();
}
cursor.close();
return true;
}
public boolean Checkisfavourite(String TableName, String dbfield, String fieldValue) {
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getReadableDatabase();
String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue;
Cursor cursor = mDb.rawQuery(Query, null);
if(cursor.getCount() <= 0){
cursor.close();
// Toast.makeText(activity, "false", Toast.LENGTH_SHORT).show();
return false;
}else {
// Toast.makeText(activity, "TRUE", Toast.LENGTH_SHORT).show();
}
cursor.close();
return true;
}
}
活动xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/color"
tools:context=".ALLVERSE">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorAccent"
app:popupTheme="@style/AppTheme.PopupOverlay">
<TextView
android:id="@+id/bookname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="20sp"
android:textColor="#ffffff"
android:textStyle="bold"
android:text="ALL VERESE" />
</android.support.v7.widget.Toolbar>
<ListView
android:layout_below="@+id/toolbar"
android:id="@+id/mylistview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
答案 0 :(得分：1)
您正在将颜色更改置于convertView == null的条件内，只需将代码移到这样的条件之外
if (convertView == null) {
...
} else {
...
}
holder.verselist.setTextColor(Color.parseColor("#fe00fb"));
colors=new ArrayList<>();
...
答案 1 :(得分：0)
尝试将此Color.parseColor("#fe00fb"更改为ContextCompat.getColor(this,RGB_COLOR_CODE)