如果找不到任何问题，如何使用 Android 解决红色文件名？

Question

Problem: I cannot seem to resolve the red filenames within my project despite doing the common fixes.

What I was trying to do: I had existing functionality in another project, as in one class and one activity , that I copied to this project rather than recreating them.

What I have tried: I have fixed some issues and warnings that were identified or apparent. I included the new activity in the androidmanifest.xml , corrected import and package statements, etc. I continued with searching here and elsewhere. I tried suggestions such as, invalidating caches and restarting, running an analysis on each file for errors or issues, and simply committed to git (VCS). Some similar posting went unresolved like on JetBrains, which the first response was to commit to VCS. Some suggestions were to make changes in Settings but I really felt that was a workaround and not a solution.

activity layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              tools:context=".MainActivityMaster">

    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/master_enter_db" />
    <EditText
            android:id="@+id/database_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:autofillHints="@string/master_enter_db"
            android:hint="@string/master_enter_db"
            android:inputType="text"
            android:text="">
    </EditText>
    <Button
            android:id="@+id/addDatabase"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/master_add_db">
    </Button>
    <ListView
            android:id="@+id/database_list"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
    </ListView>
    <Button
            android:id="@+id/useSelectedDatabase"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/master_no_db_selected"
            android:clickable="false"
    >
    </Button>

</LinearLayout>

Activity Class

public class MainActivityMaster extends AppCompatActivity {

MasterDatabase mMasterDB;
MasterDao mMasterDBDao;
EditText mDBToAdd;
Button mAddDB,mUseSelectedDatabase;
ListView mDatabaseList;
SimpleCursorAdapter mSCA;
Cursor mCsr;
long mSelectedDatabaseId = 0;
String mSelectedDatabaseName = "";


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_master);
    mDBToAdd = this.findViewById(R.id.database_name);
    mAddDB = this.findViewById(R.id.addDatabase);
    mUseSelectedDatabase = this.findViewById(R.id.useSelectedDatabase);
    mDatabaseList = this.findViewById(R.id.database_list);

    mMasterDB = MasterDatabase.getInstance(this);
    mMasterDBDao = mMasterDB.getMasterDao();


    setUpAddDBButton();
    setUpUseSelectedDatabaseButton();
    setOrRefreshDatabaseList();
}

private void setUpAddDBButton() {
    mAddDB.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (mDBToAdd.getText().toString().length() > 0) {
                if (mMasterDBDao.insert(new MasterDatabaseList(mDBToAdd.getText().toString())) > 0) {
                    mDBToAdd.setText("");
                    setOrRefreshDatabaseList();
                }
            }
        }
    });
}
private void setUpUseSelectedDatabaseButton() {
    mUseSelectedDatabase.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (mSelectedDatabaseId > 0) {
                Intent intent = new Intent(view.getContext(),MainActivity.class);
                intent.putExtra(MainActivity.INTENT_EXTRA_DATABASEID, mSelectedDatabaseId);
                intent.putExtra(MainActivity.INTENT_EXTRA_DATABASENAME,mSelectedDatabaseName);
                startActivity(intent);
            }
        }
    });
}

private void setOrRefreshDatabaseList() {
    mCsr = mMasterDBDao.getAllDatabasesAsCursor();
    if (mSCA == null) {
        mSCA = new SimpleCursorAdapter(
                this.getApplicationContext(),
                android.R.layout.simple_list_item_1,
                mCsr,
                new String[]{MasterDatabaseList.COL_DATABASE_NAME},
                new int[]{android.R.id.text1},
                0
        );
        mDatabaseList.setAdapter(mSCA);
        mDatabaseList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            /* Handle Clicking on an Item (i.e. prepare UseSelected Button) */
            @SuppressLint("Range")
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                mSelectedDatabaseId = l;
                if (l > 0) {
                    mSelectedDatabaseName = mCsr.getString(mCsr.getColumnIndex(MasterDatabaseList.COL_DATABASE_NAME));
                    mUseSelectedDatabase.setText(mSelectedDatabaseName);
                    mUseSelectedDatabase.setClickable(true);
                } else {
                    mUseSelectedDatabase.setText(R.string.master_no_db_selected);
                    mUseSelectedDatabase.setClickable(false);
                }
            }
        });
    } else {
        mSCA.swapCursor(mCsr);
    }
}

@Override
protected void onResume() {
    super.onResume();
    setOrRefreshDatabaseList();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    mCsr.close();
}

}

Answer 1

I resolved my issue and it was probably due to being naive on my part. The files were not being committed because they were not showing as "checked" to be committed. The one caveat to this scenario is that I had never encountered it before because all files I wanted to commit were checked by default, so I didn't see it before. Once I check the box, it committed since there were not other possible "red-filename" issues.