已解决！！我完全删除了Android Studio和gradle文件。然后我重新安装了Android Studio，但我不知道如何解决，但解决了。
我使用IDE和插件将Android Studio更新为最新版本。但是后来出现了这个错误。
我尝试了所有可见的答案，但即使如此，这些答案也无法解决我的问题。这是我尝试过的一些事情：
更新最新的gradle版本（5.5）
...
use strict;
use warnings;
my $texcontent = ' Sample content...
Need to place the above figure text near to citation end of paragraph, Citation would be in text ".... (\hyperref[F9]{\textbf{Figure~1}})."
Need to place the above figure text near to citation end of paragraph, Citation would be in text ".... (\hyperref[F9]{\textbf{Figure~2}})."
Need to place the above figure text near to citation end of paragraph, Citation would be in text ".... (\hyperref[F9]{\textbf{Figure~9}})."
Need to place the above figure text near to citation end of paragraph, Citation would be in text ".... (\hyperref[F9]{\textbf{Figure~3}})."
%%Figure-1
\begin{figure}[t]
\figurebox{}{}{1}[fgene-10-00561-g009]
\caption{Ectopic expression of \textit{TaPP2C135} in
\textit{Arabidopsis}. \textbf{(A)}~Expression levels of}
\end{figure}
%%Figure-2
\begin{figure}[t]
\figurebox{}{}{1}[fgene-10-00561-g009]
\caption{Ectopic expression of \textit{TaPP2C135} in
\textit{Arabidopsis}. \textbf{(A)}~Expression levels of}
\end{figure}
%%Figure-3
\begin{figure}[t]
\figurebox{}{}{1}[fgene-10-00561-g009]
\caption{Ectopic expression of \textit{TaPP2C135} in
\textit{Arabidopsis}. \textbf{(A)}~Expression levels of}
\end{figure}
';
my ($pre,$match,$post) = "";
while($texcontent=~m/\%\%(Figure\-(?:[\w]+))\n?\\begin\{(figure\*?)\}((?:(?!\\end\{\2\}).)*)\\end\{\2\}/gs)
{
$pre = $pre.$`; $match = $&; $post = $'; (my $figId = $1)=~s/\-/\~/i; #%%Figure-1 replaced with Figure~1
if($pre=~m/$figId\}\}\)/i) #Searching the ID
{
$match=~s/\{figure/\{completedfigure/i; #Completed the figures changed to completedfigures.
$pre=~s/$figId\}\}\)/$&\n<figplacedhere>$match<figplacedhere>/i; #TAG Placed figures identification
$match = "";
}
$pre = $pre.$match; $texcontent = $post;
}
if(length $pre) { $texcontent = $pre.$post; }
$texcontent=~s/<figplacedhere>//g; $texcontent=~s/\{completedfigure/\{figure/g;
print "--\n$texcontent\n--\n";
（内容）
public class MainActivity extends AppCompatActivity {
Database myDB;
@Override
protected void onCreate(Bundle savedInstanceState) {
myDB = new Database(MainActivity.this);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(this, getSupportFragmentManager());
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(sectionsPagerAdapter);
TabLayout tabs = findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
Alert();
}
public void Dialog() {
AlertDialog.Builder alert01 = new AlertDialog.Builder(MainActivity.this);
alert01.setTitle("Congratulations ! ");
alert01.setMessage("You've purchased the most expensive app in the world ! ");
Database myDB;
myDB = new Database(MainActivity.this);
Cursor res = myDB.getAllData();
if(res.getCount() == 0) {
// show message
showMessage("Error","Nothing found");
return;
}
StringBuffer buffer = new StringBuffer();
while (res.moveToNext()) {
buffer.append("Name :"+ res.getString(1)+"\n");
}
showMessage("Data",buffer.toString());
}
public void Alert (){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this,R.style.MyDialogTheme);
View v = LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog0,null);
builder.setMessage("Welcome ! ");
builder.setView (v);
builder.setPositiveButton("Submit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
EditText edituser ;
edituser = (EditText) findViewById(R.id.edit_username);
boolean isInserted = myDB.DataInput(edituser.getText().toString());
if(isInserted == true)
Toast.makeText(MainActivity.this,"Data Inserted",Toast.LENGTH_LONG).show();
else
Toast.makeText(MainActivity.this,"Data not Inserted",Toast.LENGTH_LONG).show();
Dialog();
}})
.setNegativeButton("Cancel",null)
.setCancelable(false);
AlertDialog alert = builder.create();
alert.show();
}
public void showMessage(String title,String Message){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(true);
builder.setTitle(title);
builder.setMessage(Message);
builder.show();
build.gradle（应用程序）
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.4.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
这是错误消息，在我的构建控制台中（我尝试了建议）：
build.gradle