你好，朋友我正在使用自定义列表视图使用数组采用我的问题是我试图以编程方式更改文本颜色，但对我的自定义列表视图没有任何影响，请帮助我我是初学者，我需要您的帮助，我不知道如何解决此问题，您可以在下面看到我的代码，现在检查出什么问题，谢谢您的帮助！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>
您将颜色更改放在 convertView == null的条件下，只需将代码移到条件之外，例如这样
if (convertView == null) {
...
} else {
...
}
holder.verselist.setTextColor(Color.parseColor("#fe00fb"));
colors=new ArrayList<>();
...
尝试将此Color.parseColor("#fe00fb"更改为 ContextCompat.getColor(this,RGB_COLOR_CODE)