由于某种原因,我的开始活动将我发送到错误的活动(向我发送添加任务类与查看任务类的消息)没有错误,并且在log cat中关注并不能帮助我找到问题所在。我尝试使用startActivityForResult();但这根本没有帮助,并且存在相同的问题。转到createTask.class。我需要提供更多详细信息,但是我不确定还有什么需要补充,也许还需要额外投入,然后将两个项目打包到实例中,但是我不认为这是个问题
<?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:id="@+id/amountOfTasksTextViewUIMain"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="You Have 0 Tasks"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.14"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.04000002" />
<Button
android:id="@+id/viewTaskButtonUIMain"
android:layout_width="209dp"
android:layout_height="46dp"
android:text="@string/viewTaskButtonUIMainString"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.26999998" />
<Button
android:id="@+id/createTaskButtonUIMain"
android:layout_width="209dp"
android:layout_height="46dp"
android:text="@string/createTaskButtonUIMainString"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@+id/viewTaskButtonUIMain"
app:layout_constraintStart_toStartOf="@+id/viewTaskButtonUIMain"
app:layout_constraintTop_toBottomOf="@+id/viewTaskButtonUIMain"
app:layout_constraintVertical_bias="0.04000002" />
<TextView
android:id="@+id/upCommingTasksTextViewUIMainActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/upCommingTasksTextViewUIMainActivityString"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/viewTaskButtonUIMain"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.3"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/amountOfTasksTextViewUIMain"
app:layout_constraintVertical_bias="0.18" />
<TextView
android:id="@+id/taskNameTextViewUIMainActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="13dp"
app:layout_constraintBottom_toTopOf="@+id/viewTaskButtonUIMain"
app:layout_constraintStart_toStartOf="@+id/upCommingTasksTextViewUIMainActivity"
app:layout_constraintTop_toBottomOf="@+id/upCommingTasksTextViewUIMainActivity"
app:layout_constraintVertical_bias="0.100000024" />
<TextView
android:id="@+id/dateTextViewUIMainActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="31dp"
app:layout_constraintBottom_toTopOf="@+id/viewTaskButtonUIMain"
app:layout_constraintEnd_toEndOf="@+id/taskNameTextViewUIMainActivity"
app:layout_constraintStart_toStartOf="@+id/taskNameTextViewUIMainActivity"
app:layout_constraintTop_toTopOf="@+id/taskNameTextViewUIMainActivity"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/priorityTextViewUIMainActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="@+id/viewTaskButtonUIMain"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.6"
app:layout_constraintStart_toEndOf="@+id/dateTextViewUIMainActivity"
app:layout_constraintTop_toBottomOf="@+id/taskNameTextViewUIMainActivity" />
</androidx.constraintlayout.widget.ConstraintLayout>
/*
HW02
MainActivity.java
*/
package com.example.hw02;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.DialogFragment;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.TextView;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
public class MainActivity extends AppCompatActivity {
//UI Vars
Button viewTaskButtonUIMain;
Button createTaskButtonUIMain;
TextView amountOfTasksTextViewUIMain;
TextView taskNameTextViewUIMainActivity;
TextView dateTextViewUIMainActivity;
TextView priorityTextViewUIMainActivity;
//Java Vars
ArrayList<Tasks> taskArrayList;
ArrayList<String> taskNameList;
int selectedTask;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//UI Vars inst
viewTaskButtonUIMain = findViewById(R.id.viewTaskButtonUIMain);
createTaskButtonUIMain = findViewById(R.id.createTaskButtonUIMain);
amountOfTasksTextViewUIMain = findViewById(R.id.amountOfTasksTextViewUIMain);
dateTextViewUIMainActivity = findViewById(R.id.dateTextViewUIMainActivity);
priorityTextViewUIMainActivity = findViewById(R.id.priorityTextViewUIMainActivity);
taskNameTextViewUIMainActivity = findViewById(R.id.taskNameTextViewUIMainActivity);
//Java Vars inst
taskArrayList = new ArrayList<Tasks>();
//create Tasks
createTaskButtonUIMain.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent sendArray1 = new Intent(MainActivity.this,createTask.class );
sendArray1.putExtra("reviewActivityArray",taskArrayList);
startActivity(sendArray1);
}
});
viewTaskButtonUIMain.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String[] taskNames = new String[taskArrayList.size()];
for(int i = 0; i < taskNames.length; i++) {
taskNames[i] = taskArrayList.get(i).getTaskName();
}
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Select Task")
.setItems(taskNames, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent taskDelete = new Intent(MainActivity.this, reviewActivity.class );
taskDelete.putExtra("catch1", taskArrayList);
taskDelete.putExtra("catch2",which);
startActivity(taskDelete);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.create().show();
}
});
amountOfTasksTextViewUIMain.setText("You have "+ taskArrayList.size() + " tasks");
//This is for the Create Task
if(getIntent() != null && getIntent().getExtras() != null && getIntent().hasExtra("catch")){
taskArrayList = (ArrayList<Tasks>)getIntent().getSerializableExtra("catch");
int vartempsize = taskArrayList.size();//delete
amountOfTasksTextViewUIMain.setText("You have "+ taskArrayList.size() + " tasks");
Collections.sort(taskArrayList);
//if the arrayList isn't empty
if(taskArrayList.isEmpty()==false){
//change the text
String tempName = taskArrayList.get(0).getTaskName();
taskNameTextViewUIMainActivity.setText(tempName);
dateTextViewUIMainActivity.setText(taskArrayList.get(0).returnDate().toString());
priorityTextViewUIMainActivity.setText(taskArrayList.get(0).getPrioty());
}
}
//comming from review
if(getIntent() != null && getIntent().getExtras() != null && getIntent().hasExtra("dead")){
taskArrayList = (ArrayList<Tasks>) getIntent().getSerializableExtra("dead");
Collections.sort(taskArrayList);
}
}
private void sortLists(){
//sorts list
Collections.sort(taskArrayList);
//organize the names
taskNameList.clear();
//adds all the names in the same order as the taskArrayList
for (Tasks var : taskArrayList){
taskNameList.add(var.getTaskName());
}
}
}
<?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=".reviewActivity">
<TextView
android:id="@+id/TaskInformationTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/taskInfromationTextViewUIactivityReviewString"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.13"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.06999999" />
<TextView
android:id="@+id/nameTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/nameTextViewUICreateTextString"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="@+id/TaskInformationTextViewUIactivityReview"
app:layout_constraintTop_toBottomOf="@+id/TaskInformationTextViewUIactivityReview"
app:layout_constraintVertical_bias="0.100000024" />
<TextView
android:id="@+id/dateTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/dateTextViewUIactivityReviewString"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="@+id/nameTextViewUIactivityReview"
app:layout_constraintTop_toBottomOf="@+id/nameTextViewUIactivityReview"
app:layout_constraintVertical_bias="0.050000012" />
<TextView
android:id="@+id/priorityTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/priorityTextViewUIactivityReviewString"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="@+id/dateTextViewUIactivityReview"
app:layout_constraintTop_toBottomOf="@+id/dateTextViewUIactivityReview"
app:layout_constraintVertical_bias="0.07999998" />
<TextView
android:id="@+id/nameTaskTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="@+id/nameTextViewUIactivityReview"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/nameTextViewUIactivityReview" />
<TextView
android:id="@+id/dateTaskTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="@+id/dateTextViewUIactivityReview"
app:layout_constraintStart_toStartOf="@+id/nameTaskTextViewUIactivityReview" />
<TextView
android:id="@+id/priorityTaskTextViewUIactivityReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="@+id/priorityTextViewUIactivityReview"
app:layout_constraintStart_toStartOf="@+id/dateTaskTextViewUIactivityReview" />
<Button
android:id="@+id/cancelButtonUIactivityReview"
android:layout_width="114dp"
android:layout_height="54dp"
android:text="@string/cancleButtonUICreateTaskString"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.09"
app:layout_constraintStart_toStartOf="@+id/priorityTextViewUIactivityReview"
app:layout_constraintTop_toBottomOf="@+id/priorityTextViewUIactivityReview"
app:layout_constraintVertical_bias="0.16000003" />
<Button
android:id="@+id/deleteButtonUIactivityReview"
android:layout_width="106dp"
android:layout_height="49dp"
android:text="@string/deleteButtonUIactivityReviewString"
app:layout_constraintBottom_toBottomOf="@+id/cancelButtonUIactivityReview"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.58"
app:layout_constraintStart_toEndOf="@+id/cancelButtonUIactivityReview" />
</androidx.constraintlayout.widget.ConstraintLayout>
package com.example.hw02;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Collections;
public class reviewActivity extends AppCompatActivity {
ArrayList<Tasks> taskArrayList;
int plank;
Button deleteButtonUIactivityReview;
Button cancelButtonUIactivityReview;
TextView nameTaskTextViewUIactivityReview;
TextView dateTaskTextViewUIactivityReview;
TextView priorityTaskTextViewUIactivityReview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_review);
deleteButtonUIactivityReview = findViewById(R.id.deleteButtonUIactivityReview);
cancelButtonUIactivityReview = findViewById(R.id.cancelButtonUIactivityReview);
deleteButtonUIactivityReview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
taskArrayList.remove(plank);
Intent goHomeDelete = new Intent(reviewActivity.this,MainActivity.class);
goHomeDelete.putExtra("dead",taskArrayList);
startActivity(goHomeDelete);
}
});
cancelButtonUIactivityReview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent goHomeSafe = new Intent(reviewActivity.this,MainActivity.class);
startActivity(goHomeSafe);
}
});
if(getIntent() != null && getIntent().getExtras() != null && getIntent().hasExtra("catch1")){
taskArrayList = (ArrayList<Tasks>) getIntent().getSerializableExtra("catch1");
plank = (int)getIntent().getSerializableExtra("catch2");
}
nameTaskTextViewUIactivityReview.setText(taskArrayList.get(plank).taskName);
dateTaskTextViewUIactivityReview.setText(taskArrayList.get(plank).returnDate().toString());
priorityTaskTextViewUIactivityReview.setText(taskArrayList.get(plank).getPrioty());
}
}