Java setcontentview在尝试创建新的EditText后使应用程序崩溃
我正在尝试编写一个notes管理应用程序,当我添加一些新的备注时,请删除它们,然后尝试添加新的备注该应用程序正在setcontentview()上崩溃。 我添加了日志,它可以通过删除first editText然后添加一个新文本轻松触发Java setcontentview在尝试创建新的EditText后使应用程序崩溃,java,android,crash,setcontentview,Java,Android,Crash,Setcontentview,我正在尝试编写一个notes管理应用程序,当我添加一些新的备注时,请删除它们,然后尝试添加新的备注该应用程序正在setcontentview()上崩溃。 我添加了日志,它可以通过删除first editText然后添加一个新文本轻松触发 public class Mainpage extends AppCompatActivity { private LinearLayout MyLayout; private ScrollView sv; private List<EditText&g
public class Mainpage extends AppCompatActivity {
private LinearLayout MyLayout;
private ScrollView sv;
private List<EditText> et = new ArrayList<EditText>();
private List<EditText> ct = new ArrayList<EditText>();
private List<TextView> tv = new ArrayList<TextView>();
private List<CheckBox> cb = new ArrayList<CheckBox>();
private Button btn;
final Context context = this;
private CountDownTimer timer;
boolean isWaiting;
int last_added;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainpage);
last_added = 0;
//btn = (Button) findViewById(R.id.btn);
//btn.setVisibility(View.INVISIBLE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_mainpage, menu);
sv = new ScrollView(this);
MyLayout = new LinearLayout(this);
MyLayout.setOrientation(LinearLayout.VERTICAL);
sv.addView(MyLayout);
timer = new CountDownTimer(500,500) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
isWaiting = false;
}
};
btn = new Button(this);
btn.setText("Accept");
btn.setVisibility(View.INVISIBLE);
MyLayout.addView(btn);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
else if (id == R.id.action_add) {
et.add(new EditText(this)) ;
tv.add(new TextView(this));
ct.add(new EditText(this));
cb.add(new CheckBox(this));
cb.get(ct.size() -1).setVisibility(View.INVISIBLE);
ct.get(ct.size() -1).setVisibility(View.INVISIBLE);
Calendar cal = Calendar.getInstance();
String date = new SimpleDateFormat("dd-MM-yyyy").format(new Date());
tv.get(tv.size() -1).setText("created on" + date);
et.get(et.size() - 1).setText("weeeeeeeeeee~!");
MyLayout.addView(et.get(et.size() - 1));
MyLayout.addView(ct.get(ct.size() -1));
MyLayout.addView(tv.get(tv.size() - 1));
MyLayout.addView(cb.get(cb.size() - 1));
this.setContentView(sv);
et.get(last_added).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for(int i=0;i<et.size();i++)
{
if(et.get(i) == v)
{
last_added = i + 1;
break;
}
}
if(isWaiting) {
isWaiting = false;
timer.cancel();
// TODO: open a new EditText
if(ct.get(last_added -1).isShown())
{
ct.get(last_added -1).setVisibility(View.INVISIBLE);
}
else
{
ct.get(last_added -1).setVisibility(View.VISIBLE);
}
}
else {
isWaiting = true;
timer.start();
}
}
});
last_added++;
return true;
}
else if (id == R.id.action_delete) {
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.VISIBLE);
}
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for(int j=0; j < cb.size();j++)
{
if(cb.get(j).isChecked())
{
et.get(j).setVisibility(View.GONE);
tv.get(j).setVisibility(View.GONE);
ct.get(j).setVisibility(View.GONE);
cb.get(j).setVisibility(View.GONE);
et.remove(j);
tv.remove(j);
ct.remove(j);
cb.remove(j);
}
}
btn.setVisibility(View.INVISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.INVISIBLE);
}
}
});
this.setContentView(sv);
return true;
}
else if (id == R.id.action_search) {
return true;
}
else if (id == R.id.action_send) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
1) 你的错误
错误显示在125中您有IndexOutOfBoundsException例外
at com.example.user_pc.notes.Mainpage.onOptionsItemSelected(Mainpage.java:125)
在一个数组上调用get函数。列表中有一项。maxumum的索引必须为0,但调用1会引发IndexOutOfBoundsException
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
2) 您不需要创建附加的arraylist
private List<EditText> et = new ArrayList<EditText>();
3) 您不需要在ScrollView上调用以下方法。它必须是自动的
this.setContentView(sv);
4) 最后你的代码被破解了。试着用标准的方式。阅读android教程1)您的错误
错误显示在125中您有IndexOutOfBoundsException例外
at com.example.user_pc.notes.Mainpage.onOptionsItemSelected(Mainpage.java:125)
在一个数组上调用get函数。列表中有一项。maxumum的索引必须为0,但调用1会引发IndexOutOfBoundsException
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
2) 您不需要创建附加的arraylist
private List<EditText> et = new ArrayList<EditText>();
3) 您不需要在ScrollView上调用以下方法。它必须是自动的
this.setContentView(sv);
4) 最后你的代码被破解了。试着用标准的方式。阅读android教程修复了它。
当我尝试添加新的编辑文本时,上次添加的文本太高
公共类主页扩展了AppCompatActivity{
private LinearLayout MyLayout;
private ScrollView sv;
private List<EditText> et = new ArrayList<EditText>();
private List<EditText> ct = new ArrayList<EditText>();
private List<TextView> tv = new ArrayList<TextView>();
private List<CheckBox> cb = new ArrayList<CheckBox>();
private Button btn;
final Context context = this;
private CountDownTimer timer;
boolean isWaiting;
int last_added;
int num_removed;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainpage);
last_added = 0;
//btn = (Button) findViewById(R.id.btn);
//btn.setVisibility(View.INVISIBLE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_mainpage, menu);
sv = new ScrollView(this);
MyLayout = new LinearLayout(this);
MyLayout.setOrientation(LinearLayout.VERTICAL);
sv.addView(MyLayout);
timer = new CountDownTimer(500,500) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
isWaiting = false;
}
};
btn = new Button(this);
btn.setText("Accept");
btn.setVisibility(View.INVISIBLE);
MyLayout.addView(btn);
///search shit
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
else if (id == R.id.action_add) {
et.add(new EditText(this)) ;
tv.add(new TextView(this));
ct.add(new EditText(this));
cb.add(new CheckBox(this));
cb.get(ct.size() -1).setVisibility(View.INVISIBLE);
ct.get(ct.size() -1).setVisibility(View.INVISIBLE);
Calendar cal = Calendar.getInstance();
String date = new SimpleDateFormat("dd-MM-yyyy").format(new Date());
tv.get(tv.size() -1).setText("created on" + date);
et.get(et.size() - 1).setText("weeeeeeeeeee~!");
MyLayout.addView(et.get(et.size() - 1));
MyLayout.addView(ct.get(ct.size() -1));
MyLayout.addView(tv.get(tv.size() - 1));
MyLayout.addView(cb.get(cb.size() - 1));
this.setContentView(sv);
et.get(last_added).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for(int i=0;i<et.size();i++)
{
if(et.get(i) == v)
{
last_added = i + 1;
break;
}
}
if(isWaiting) {
isWaiting = false;
timer.cancel();
// TODO: open a new EditText
if(ct.get(last_added -1).isShown())
{
ct.get(last_added -1).setVisibility(View.INVISIBLE);
}
else
{
ct.get(last_added -1).setVisibility(View.VISIBLE);
}
}
else {
isWaiting = true;
timer.start();
}
}
});
last_added++;
return true;
}
else if (id == R.id.action_delete) {
num_removed = 0;
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.VISIBLE);
}
btn.setOnClickListener(new View.OnClickListener() {
int checked =0;
@Override
public void onClick(View v) {
while(true)
{
for(int j=0;j< cb.size();j++)
{
if(cb.get(j).isChecked())
{
checked++;
}
}
if(checked == 0)
{
break;
}
for(int i=0;i<cb.size();i++)
{
if(cb.get(i).isChecked())
{
et.get(i).setVisibility(View.GONE);
tv.get(i).setVisibility(View.GONE);
ct.get(i).setVisibility(View.GONE);
cb.get(i).setVisibility(View.GONE);
et.remove(i);
tv.remove(i);
ct.remove(i);
cb.remove(i);
last_added--;
}
}
checked = 0;
}
btn.setVisibility(View.INVISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.INVISIBLE);
}
}
});
this.setContentView(sv);
return true;
}
else if (id == R.id.action_search) {
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.VISIBLE);
}
return true;
}
else if (id == R.id.action_send)
{
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++)
{
cb.get(i).setVisibility(View.VISIBLE);
cb.get(i).setChecked(false);
}
btn.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
String [] to = new String[]{};
for(int j=0; j < cb.size();j++)
{
if(cb.get(j).isChecked())
{
sendEmail(et.get(j).getText().toString(),ct.get(j).getText().toString());
}
}
btn.setVisibility(View.INVISIBLE);
for (int i = 0; i < cb.size(); i++)
{
cb.get(i).setVisibility(View.INVISIBLE);
}
}});
this.setContentView(sv);
return true;
}
return super.onOptionsItemSelected(item);
}
protected void sendEmail(String subject,String Context)
{
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.putExtra(Intent.EXTRA_SUBJECT,subject);
emailIntent.putExtra(Intent.EXTRA_TEXT,Context);
emailIntent.setType("message/rfc822");
startActivity(Intent.createChooser(emailIntent,"Email"));
}
private LinearLayout MyLayout;
私有滚动视图sv;
private List et=new ArrayList();
私有列表ct=newarraylist();
private List tv=new ArrayList();
私有列表cb=新的ArrayList();
专用按钮btn;
最终上下文=此;
私人倒计时;
我在等待;
最后添加的int;
移除int num_;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_主页);
最后添加的_=0;
//btn=(按钮)findViewById(R.id.btn);
//btn.setVisibility(视图不可见);
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.menu\u主页,菜单);
sv=新的滚动视图(此);
MyLayout=新的线性布局(本);
MyLayout.setOrientation(线性布局.垂直);
sv.addView(MyLayout);
计时器=新的倒计时计时器(500500){
@凌驾
公共void onTick(长毫秒未完成){
}
@凌驾
公共无效onFinish(){
isWaiting=false;
}
};
btn=新按钮(此按钮);
btn.setText(“接受”);
btn.setVisibility(视图不可见);
MyLayout.addView(btn);
///搜索狗屎
返回true;
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击,只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId();
//noinspection SimplifiableIf语句
if(id==R.id.action\u设置){
返回true;
}
else if(id==R.id.action\u add){
添加(新编辑文本(本));
添加(新文本视图(this));
添加(新编辑文本(本));
cb.添加(新复选框(此));
cb.get(ct.size()-1).setVisibility(View.INVISIBLE);
ct.get(ct.size()-1).setVisibility(View.INVISIBLE);
Calendar cal=Calendar.getInstance();
字符串日期=新的SimpleDataFormat(“dd-MM-yyyy”).format(新日期());
tv.get(tv.size()-1).setText(“创建日期”+date);
et.get(et.size()-1).setText(“weeeee~!”);
addView(et.get(et.size()-1));
addView(ct.get(ct.size()-1));
MyLayout.addView(tv.get(tv.size()-1));
addView(cb.get(cb.size()-1));
这个.setContentView(sv);
et.get(最后添加的)。setOnClickListener(新视图。OnClickListener(){
@凌驾
公共void onClick(视图v){
对于(inti=0;i修正了它。
当我尝试添加新的编辑文本时,上次添加的文本太高
公共类主页扩展了AppCompatActivity{
private LinearLayout MyLayout;
private ScrollView sv;
private List<EditText> et = new ArrayList<EditText>();
private List<EditText> ct = new ArrayList<EditText>();
private List<TextView> tv = new ArrayList<TextView>();
private List<CheckBox> cb = new ArrayList<CheckBox>();
private Button btn;
final Context context = this;
private CountDownTimer timer;
boolean isWaiting;
int last_added;
int num_removed;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainpage);
last_added = 0;
//btn = (Button) findViewById(R.id.btn);
//btn.setVisibility(View.INVISIBLE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_mainpage, menu);
sv = new ScrollView(this);
MyLayout = new LinearLayout(this);
MyLayout.setOrientation(LinearLayout.VERTICAL);
sv.addView(MyLayout);
timer = new CountDownTimer(500,500) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
isWaiting = false;
}
};
btn = new Button(this);
btn.setText("Accept");
btn.setVisibility(View.INVISIBLE);
MyLayout.addView(btn);
///search shit
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
else if (id == R.id.action_add) {
et.add(new EditText(this)) ;
tv.add(new TextView(this));
ct.add(new EditText(this));
cb.add(new CheckBox(this));
cb.get(ct.size() -1).setVisibility(View.INVISIBLE);
ct.get(ct.size() -1).setVisibility(View.INVISIBLE);
Calendar cal = Calendar.getInstance();
String date = new SimpleDateFormat("dd-MM-yyyy").format(new Date());
tv.get(tv.size() -1).setText("created on" + date);
et.get(et.size() - 1).setText("weeeeeeeeeee~!");
MyLayout.addView(et.get(et.size() - 1));
MyLayout.addView(ct.get(ct.size() -1));
MyLayout.addView(tv.get(tv.size() - 1));
MyLayout.addView(cb.get(cb.size() - 1));
this.setContentView(sv);
et.get(last_added).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for(int i=0;i<et.size();i++)
{
if(et.get(i) == v)
{
last_added = i + 1;
break;
}
}
if(isWaiting) {
isWaiting = false;
timer.cancel();
// TODO: open a new EditText
if(ct.get(last_added -1).isShown())
{
ct.get(last_added -1).setVisibility(View.INVISIBLE);
}
else
{
ct.get(last_added -1).setVisibility(View.VISIBLE);
}
}
else {
isWaiting = true;
timer.start();
}
}
});
last_added++;
return true;
}
else if (id == R.id.action_delete) {
num_removed = 0;
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.VISIBLE);
}
btn.setOnClickListener(new View.OnClickListener() {
int checked =0;
@Override
public void onClick(View v) {
while(true)
{
for(int j=0;j< cb.size();j++)
{
if(cb.get(j).isChecked())
{
checked++;
}
}
if(checked == 0)
{
break;
}
for(int i=0;i<cb.size();i++)
{
if(cb.get(i).isChecked())
{
et.get(i).setVisibility(View.GONE);
tv.get(i).setVisibility(View.GONE);
ct.get(i).setVisibility(View.GONE);
cb.get(i).setVisibility(View.GONE);
et.remove(i);
tv.remove(i);
ct.remove(i);
cb.remove(i);
last_added--;
}
}
checked = 0;
}
btn.setVisibility(View.INVISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.INVISIBLE);
}
}
});
this.setContentView(sv);
return true;
}
else if (id == R.id.action_search) {
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++) {
cb.get(i).setVisibility(View.VISIBLE);
}
return true;
}
else if (id == R.id.action_send)
{
btn.setVisibility(View.VISIBLE);
for (int i = 0; i < cb.size(); i++)
{
cb.get(i).setVisibility(View.VISIBLE);
cb.get(i).setChecked(false);
}
btn.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
String [] to = new String[]{};
for(int j=0; j < cb.size();j++)
{
if(cb.get(j).isChecked())
{
sendEmail(et.get(j).getText().toString(),ct.get(j).getText().toString());
}
}
btn.setVisibility(View.INVISIBLE);
for (int i = 0; i < cb.size(); i++)
{
cb.get(i).setVisibility(View.INVISIBLE);
}
}});
this.setContentView(sv);
return true;
}
return super.onOptionsItemSelected(item);
}
protected void sendEmail(String subject,String Context)
{
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.putExtra(Intent.EXTRA_SUBJECT,subject);
emailIntent.putExtra(Intent.EXTRA_TEXT,Context);
emailIntent.setType("message/rfc822");
startActivity(Intent.createChooser(emailIntent,"Email"));
}
private LinearLayout MyLayout;
私有滚动视图sv;
private List et=new ArrayList();
私有列表ct=newarraylist();
private List tv=new ArrayList();
私有列表cb=新的ArrayList();
专用按钮btn;
最终上下文=此;
私人倒计时;
我在等待;
最后添加的int;
移除int num_;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_主页);
最后添加的_=0;
//btn=(按钮)findViewById(R.id.btn);
//btn.setVisibility(视图不可见);
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.menu\u主页,菜单);
sv=新的滚动视图(此);
MyLayout=新的线性布局(本);
MyLayout.setOrientation(线性布局.垂直);
sv.addView(MyLayout);
计时器=新的倒计时计时器(500500){
@凌驾
公共void onTick(长毫秒未完成){
}
@凌驾
公共无效onFinish(){
isWaiting=false;
}
};
btn=新按钮(此按钮);
btn.setText(“接受”);
btn.setVisibility(视图不可见);
MyLayout.addView(btn);
///搜索狗屎
返回true;
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击,只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId();
//noinspection SimplifiableIf语句
if(id==R.id.action\u设置){
返回true;
}
else if(id==R.id.action