我最近下载了一个CSS作弊程序，但在游戏过程中它不断地在聊天中向VK开发人员发送链接（据我所知，这是因为这是一个免费版本）。所以，我想从这个dll中删除这段文本（或者至少用空格替换它），我什至设法通过IDA找到了这一行的存储位置。但是我怎样才能编辑它并编译回dll呢？
大家好。在这里，我决定开始掌握像 Fragment 这样的 UI 元素，但是我出了点问题。事实是，我创建了一个在启动时打开一个空 Fragment 的应用程序，但该应用程序立即崩溃并出现以下错误：
java.lang.IllegalArgumentException: No view found for id 0x7f080155 com.masterok.testapp:id/placeHolder) for fragment MainFragment{f9b5608} (4b1096cb-a0bc-4cc0-a9ff-2975f29359ce id=0x7f080155)(com.masterok.testapp:id/placeHolder) for fragment MainFragment{f9b5608} (4b1096cb-a0bc-4cc0-a9ff-2975f29359ce id=0x7f080155)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:513)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1473)
at android.app.Activity.performStart(Activity.java:8082)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3732)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2253)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:7870)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:550)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
如何解决这个问题呢？MainActivity 和 MainFragment 代码如下：
活动主.xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.kt：
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
supportFragmentManager
.beginTransaction()
.replace(R.id.placeHolder, MainFragment.newInstance())
.commit()
}
}
片段主.xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/placeHolder"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".fragments.MainFragment">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fragment1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainFragment.kt：
class MainFragment : Fragment() {
private lateinit var binding: FragmentMainBinding
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentMainBinding.inflate(inflater, container, false)
return binding.root
}
companion object {
@JvmStatic
fun newInstance() = MainFragment()
}
}
大家好。我决定在 Unity 中制作 2d 游戏，但我遇到了问题。游戏的本质是你需要控制角色并收集硬币，硬币应该每两秒出现在随机位置，当角色接触它们时应该消失。但问题是，当角色接触硬币时，OnTriggerEnter2D 事件不会触发，延迟函数“Thread.Sleep();”也不起作用。当我将它添加到代码并开始游戏时，Unity 冻结并且不响应任何点击。如何使用 OnTriggerEnter2D 和 Thread.Sleep() 解决这两个问题；
代码如下：
GameController.cs（其中包含每两秒生成硬币的代码）：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Threading;
using System.Threading.Tasks;
public class GameController : MonoBehaviour
{
public GameObject coin;
public static GameObject inst_obj;
private void SpawnCoin()
{
int randY = Random.Range(5, -6);
int randX = Random.Range(-3, 3);
Vector3 spawnPosition = new Vector3(randX, randY);
Quaternion spawnRotation = Quaternion.identity;
inst_obj = Instantiate(coin, spawnPosition, spawnRotation) as GameObject;
}
private void FixedUpdate()
{
Thread.Sleep(2000);
SpawnCoin();
}
}
这是 Player.cs 脚本（包含相同的 OnTriggerEnter2D）：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using System.Threading;
using System;
using System.Threading.Tasks;
public class Player : MonoBehaviour
{
public FixedJoystick joystick;
public float velocity = 1.0f;
public float velocityRightLeft = 1.0f;
private int coins1 = 0;
//GameController gameController = new GameController();
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void FixedUpdate()
{
gameObject.GetComponent<Rigidbody2D>().transform.position += new Vector3(joystick.Direction.x * velocityRightLeft * Time.fixedDeltaTime, joystick.Direction.y * velocity * Time.fixedDeltaTime, 0);
}
private void OnTriggerEnter2D(Collider2D other)
{
if (other.tag.Equals("Coin"))
{
Destroy(GameController.inst_obj);
}
}
}
有一个类player包含停止( stopPlayerAnim) 和启动( startPlayerAnim) 播放器动画的功能，以及启动Joystic它们的类。但是当我按下操纵杆时，游戏崩溃并出现以下错误：
NullReferenceException：对象引用未设置为对象的实例 player.startPlayerAnim ()（位于 Assets/scripts/player.cs:46）Joystic.OnDrag (UnityEngine.EventSystems.PointerEventData eventData)（位于 Assets/scripts/Joystic.cs： 13) UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IDragHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (在Library/PackageCache/com.unity.ugui@1.0.0/Runtime/EventSystem/ExecuteEvents.cs:71) UnityEngine.EventSystems.ExecuteEvents.Execute[T]（UnityEngine.GameObject 目标，UnityEngine.EventSystems.BaseEventData eventData，UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] 函子）（在 Library/PackageCache/com.unity.ugui@1.0 .0/Runtime/EventSystem/ExecuteEvents.cs:262) UnityEngine.EventSystems.EventSystem:Update()（在 Library/PackageCache/com.unity.ugui@1.0。0/运行时/EventSystem/EventSystem.cs:385)>
错误指的是这一行：player1.GetComponent<Animator>().SetBool("ball_anim", true);
是什么原因造成的，如何消除？上述脚本的代码如下：
播放器.cs：
public class player : MonoBehaviour
{
public static GameObject player1;
void Start()
{
}
public static void startPlayerAnim()
{
player1.GetComponent<Animator>().SetBool("ball_anim", true);
player1.GetComponent<Animator>().SetBool("inverted_ball_anim", false);
}
public static void stopPlayerAnim()
{
player1.GetComponent<Animator>().SetBool("ball_anim", false);
player1.GetComponent<Animator>().SetBool("inverted_ball_anim", false);
}
public static void startInvertedPlayerAnim()
{
player1.GetComponent<Animator>().SetBool("inverted_ball_anim", true);
player1.GetComponent<Animator>().SetBool("ball_anim", false);
}
}
我有一个带注释的应用程序。我在那里添加了通知（显示在状态栏中）。为了测试，我做了这样的设置，当您单击“绿色”按钮时，应用程序不仅会更改背景，还会向用户发送通知。但我想确保通知不是通过按下按钮发送给用户，而是在某个时间（例如，17:00）自动发送给用户，即使他没有打开应用程序。我该如何实施？为此，我提前准备了一个 BootCompletedReceiver，以便在设备启动后自动启动应用程序。接收者和通知代码将在下面。
引导完成接收器：
public class BootCompletedReceiver extends BroadcastReceiver {
public BootCompletedReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
}
}
}
发送通知代码：
...
public void onClickGreen(View view) {
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
v.vibrate(VibrationEffect.createOneShot(500, VibrationEffect.DEFAULT_AMPLITUDE));
} else {
v.vibrate(500);
}
Intent notificationIntent = new Intent(Options.this, Options.class);
PendingIntent contentIntent = PendingIntent.getActivity(Options.this,
0, notificationIntent,
PendingIntent.FLAG_CANCEL_CURRENT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder builder =
new NotificationCompat.Builder(Options.this, CHANNEL_ID)
.setSmallIcon(R.drawable.ikon_for_calendar_1)
.setContentTitle("Напоминание")
.setContentText("Пора проверить заметки!")
.setSound(defaultSoundUri)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setContentIntent(contentIntent)
.setAutoCancel(true); // автоматически закрыть уведомление после нажатия
NotificationManagerCompat notificationManager =
NotificationManagerCompat.from(Options.this);
notificationManager.notify(NOTIFY_ID, builder.build());
}
大家好。我有一个笔记应用程序。我决定在其中添加每个笔记创建时间的显示。一切都差不多了，但是在MainAdapter文件（RecyclerView的适配器，显示笔记列表）中出现了错误，即在holder.setData(mainArray.get(position).getTitle());A行，错误如下：'setData(java.lang.String, java.lang. 'com.masterok.calendar.adapter.MainAdapter.MyViewHolder' 中的 String)' 不能应用于 '(java.lang.String)' 是什么导致了这个错误，我该如何解决？我给出下面的代码：
MainAdapter.java：
package com.masterok.calendar.adapter;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.masterok.calendar.EditActivity;
import com.masterok.calendar.R;
import com.masterok.calendar.db.MyConstants;
import com.masterok.calendar.db.MyDbManager;
import java.util.ArrayList;
import java.util.List;
public class MainAdapter extends RecyclerView.Adapter <MainAdapter.MyViewHolder> {
private final Context context;
private final List<ListItem> mainArray;
public MainAdapter(Context context) {
this.context = context;
mainArray = new ArrayList<>();
}
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.item_list_layout, parent,false);
return new MyViewHolder(view, context, mainArray);
}
@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
holder.setData(mainArray.get(position).getTitle());
}
@Override
public int getItemCount() {
return mainArray.size();
}
static class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private final TextView tvTitle;
private final TextView tvTime;
private final Context context;
private final List<ListItem> mainArray;
public MyViewHolder(@NonNull View itemView, Context context, List<ListItem> mainArray) {
super(itemView);
this.context = context;
this.mainArray = mainArray;
tvTitle = itemView.findViewById(R.id.tvTitle);
tvTime = itemView.findViewById(R.id.tvTime);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
Intent i = new Intent(context, EditActivity.class);
i.putExtra(MyConstants.LIST_ITEM_INTENT, mainArray.get(getAdapterPosition()));
i.putExtra(MyConstants.EDIT_STATE, false);
context.startActivity(i);
}
public void setData(String title, String time) {
tvTitle.setText(title);
tvTime.setText(time);
}
}
public void updateAdapter(List<ListItem> newList){
mainArray.clear();
mainArray.addAll(newList);
notifyDataSetChanged();
}
public void removeItem(int pos, MyDbManager dbManager){
dbManager.delete(mainArray.get(pos).getId());
mainArray.remove(pos);
notifyItemRangeChanged(0, mainArray.size());
notifyItemRemoved(pos);
}
}
EditActivity.java（添加/编辑笔记屏幕）：
package com.masterok.calendar;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.constraintlayout.widget.ConstraintLayout;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.masterok.calendar.adapter.ListItem;
import com.masterok.calendar.db.AppExecutor;
import com.masterok.calendar.db.MyConstants;
import com.masterok.calendar.db.MyDbManager;
import java.text.SimpleDateFormat;
import java.util.Date;
public class EditActivity extends AppCompatActivity {
private final int PICK_IMAGE_CODE = 123;
private ImageView imNewImage;
private ConstraintLayout imageContainer;
private ImageButton imEditImage, imDeleteImage;
private FloatingActionButton fbAddImage;
private EditText edTitle, edDesc;
private MyDbManager myDbManager;
private String tempUri = "empty";
private boolean isEditState = true;
private ListItem item;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit);
init();
getMyIntents();
}
private void init() {
myDbManager = new MyDbManager(this);
edTitle = findViewById(R.id.edTitle);
imNewImage = findViewById(R.id.imNewImage);
fbAddImage = findViewById(R.id.fbAddImage);
imageContainer = findViewById(R.id.imageContainer);
imEditImage = findViewById(R.id.imEditImage);
imDeleteImage = findViewById(R.id.imDeleteImage);
edDesc = findViewById(R.id.edDesc);
}
private void getMyIntents() {
Intent i = getIntent();
if (i != null) {
item = (ListItem) i.getSerializableExtra(MyConstants.LIST_ITEM_INTENT);
isEditState = i.getBooleanExtra(MyConstants.EDIT_STATE, true);
if (!isEditState) {
edTitle.setText(item.getTitle());
edDesc.setText(item.getDesc());
if (!item.getUri().equals("empty")) {
tempUri = item.getUri();
imageContainer.setVisibility(View.VISIBLE);
imNewImage.setImageURI(Uri.parse(item.getUri()));
imDeleteImage.setVisibility(View.GONE);
imEditImage.setVisibility(View.GONE);
}
}
}
}
public void onResume() {
super.onResume();
}
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && requestCode == PICK_IMAGE_CODE && data != null) {
tempUri = data.getData().toString();
imNewImage.setImageURI(data.getData());
getContentResolver().takePersistableUriPermission(data.getData(), Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
}
public void onClickSave(View view) {
final String title = edTitle.getText().toString();
final String desc = edDesc.getText().toString();
if (title.equals("") || desc.equals("")) {
Toast.makeText(this, R.string.empty, Toast.LENGTH_LONG).show();
} else {
if (isEditState) {
myDbManager.openDb();
AppExecutor.getInstance().getSubIO().execute(new Runnable() {
@Override
public void run() {
myDbManager.insertToDb(title, desc, tempUri, getCurrentTime());
}
});
Toast.makeText(this, R.string.saved, Toast.LENGTH_LONG).show();
} else {
myDbManager.openDb();
myDbManager.updateItem(title, desc, tempUri, item.getId(), getCurrentTime());
Toast.makeText(this, R.string.saved, Toast.LENGTH_LONG).show();
}
myDbManager.closeDb();
finish();
}
}
public void onBackPressed () {
super.onBackPressed();
final String title = edTitle.getText().toString();
final String desc = edDesc.getText().toString();
if (title.equals("") || desc.equals("")) {
Toast.makeText(this, R.string.empty, Toast.LENGTH_LONG).show();
} else {
if (isEditState) {
myDbManager.openDb();
AppExecutor.getInstance().getSubIO().execute(new Runnable() {
@Override
public void run() {
myDbManager.insertToDb(title, desc, tempUri, getCurrentTime());
}
});
Toast.makeText(this, R.string.saved, Toast.LENGTH_SHORT).show();
} else {
myDbManager.openDb();
myDbManager.updateItem(title, desc, tempUri, item.getId(), getCurrentTime());
Toast.makeText(this, R.string.saved, Toast.LENGTH_LONG).show();
}
myDbManager.closeDb();
finish();
}
}
public void onClickDeleteImage(View view) {
imNewImage.setImageResource(R.drawable.ic_image_def);
tempUri = "empty";
imageContainer.setVisibility(View.GONE);
fbAddImage.setVisibility(View.VISIBLE);
}
public void onClickAddImage(View view) {
imageContainer.setVisibility(View.VISIBLE);
view.setVisibility(View.GONE);
}
public void onClickChooseImage(View view) {
Intent chooser = new Intent(Intent.ACTION_OPEN_DOCUMENT);
chooser.setType("image/*");
startActivityForResult(chooser, PICK_IMAGE_CODE);
}
private String getCurrentTime(){
Date date = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
return formatter.format(date);
}
}
Listitem.java：
package com.masterok.calendar.adapter;
import java.io.Serializable;
public class ListItem implements Serializable {
private String title;
private String desc;
private String uri = "empty";
private String time = "";
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
private int id = 0;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDesc() {
return desc;
}
public void setTime(String time) {
this.time = time;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getUri() {
return uri;
}
public void setUri(String uri) {
this.uri = uri;
}
}
我决定通过对话框将 SharedPreferences 清除功能（其中存储笔记）与日历和笔记一起添加到我的应用程序中，但是出了点问题：当单击对话框中的“确定”按钮时，笔记应该已被清除，但由于某种原因，没有发生清除（没有出现错误），即使我使用以下命令确认了这一点：
editor.apply();
activity_notes.xml 代码：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context="Notes">
<ImageButton
android:id="@+id/imageButton3"
android:layout_width="83dp"
android:layout_height="73dp"
android:layout_marginStart="1dp"
android:layout_marginLeft="1dp"
android:layout_marginBottom="5dp"
android:contentDescription="@string/addnote"
android:onClick="addnote"
android:src="@android:drawable/ic_input_add"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="ImageContrastCheck" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="279dp"
android:layout_marginBottom="324dp"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/final_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<TextView
android:id="@+id/notesView"
android:layout_width="410dp"
android:layout_height="468dp"
android:text=""
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="@+id/clear_notes"
android:layout_width="65dp"
android:layout_height="55dp"
android:layout_marginStart="335dp"
android:layout_marginLeft="335dp"
android:layout_marginTop="538dp"
android:layout_marginEnd="11dp"
android:layout_marginRight="11dp"
android:layout_marginBottom="10dp"
android:contentDescription="@string/delete_notes"
android:onClick="clear_notes"
android:src="@android:drawable/ic_menu_delete"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="SpeakableTextPresentCheck" />
</androidx.constraintlayout.widget.ConstraintLayout>
Notes.java 代码（如果有的话，方法中用于清除注释的代码clear_notes）：
package com.masterok.calendar;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
public class Notes extends AppCompatActivity {
final Context context = this;
final Context context1 = this;
public ImageButton button;
public TextView final_text;
public SharedPreferences pref;
public EditText input_text;
public TextView notesView;
public final String save_key = "save note";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_notes);
notesView = (TextView)findViewById(R.id.notesView);
button = findViewById(R.id.imageButton3);
final_text = findViewById(R.id.final_text);
init();}
public void init(){
pref = getSharedPreferences( "note",MODE_PRIVATE);
input_text = findViewById (R.id.input_text);
notesView.setText(pref.getString(save_key,"You haven`t got any note"));
}
public void clear_notes(View arg0){
LayoutInflater li = LayoutInflater.from(context1);
View promptsView = li.inflate(R.layout.deleting_notes, null);
AlertDialog.Builder mDialogBuilder = new AlertDialog.Builder(context1);
mDialogBuilder.setView(promptsView);
mDialogBuilder
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
SharedPreferences sharedPrefs = context.getSharedPreferences(save_key, MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPrefs.edit();
editor.apply();
editor.remove(save_key );
editor.apply();
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
dialog.cancel();
}
});
AlertDialog alertDialog = mDialogBuilder.create();
alertDialog.show();
}
public void addnote(View arg0) {
LayoutInflater li = LayoutInflater.from(context);
View promptsView = li.inflate(R.layout.prompt, null);
AlertDialog.Builder mDialogBuilder = new AlertDialog.Builder(context);
mDialogBuilder.setView(promptsView);
final EditText userInput = promptsView.findViewById(R.id.input_text);
mDialogBuilder
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
final_text.setText(userInput.getText());
SharedPreferences.Editor edit = pref.edit();
edit.putString(save_key,final_text.getText().toString());
edit.apply();
notesView.setText(pref.getString(save_key,"You haven`t got any note"));
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
dialog.cancel();
}
});
AlertDialog alertDialog = mDialogBuilder.create();
alertDialog.show();
}
}
Prompt.xml 代码（这是添加注释对话框）：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout_root"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="10dp" >
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/write_the_note"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="@+id/input_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<requestFocus />
</EditText>
</LinearLayout>
delete_notes.xml 的代码（这是删除笔记对话框）：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/do_you_want_to_clear_notes" />
</LinearLayout>
请告诉我如何解决这个问题。