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Several performance improvements
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@therealsujitk
therealsujitk committed Dec 9, 2020
1 parent c933991 commit f17bc2a
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Showing 8 changed files with 1,307 additions and 1,185 deletions.
300 changes: 156 additions & 144 deletions app/src/main/java/tk/therealsuji/vtopchennai/AttendanceActivity.java
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Original file line number Diff line number Diff line change
Expand Up @@ -24,150 +24,162 @@ protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_attendance);
Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);

LinearLayout attendance = findViewById(R.id.attendance);
float pixelDensity = this.getResources().getDisplayMetrics().density;

SQLiteDatabase myDatabase = this.openOrCreateDatabase("vtop", Context.MODE_PRIVATE, null);
myDatabase.execSQL("CREATE TABLE IF NOT EXISTS attendance (id INT(3) PRIMARY KEY, course VARCHAR, type VARCHAR, attended VARCHAR, total VARCHAR, percent VARCHAR)");
Cursor c = myDatabase.rawQuery("SELECT * FROM attendance", null);

int courseIndex = c.getColumnIndex("course");
int typeIndex = c.getColumnIndex("type");
int attendedIndex = c.getColumnIndex("attended");
int totalIndex = c.getColumnIndex("total");
int percentIndex = c.getColumnIndex("percent");
c.moveToFirst();

for (int i = 0; i < c.getCount(); ++i) {
/*
The outer block
*/
LinearLayout block = new LinearLayout(this);
LinearLayout.LayoutParams blockParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
blockParams.setMarginStart((int) (20 * pixelDensity));
blockParams.setMarginEnd((int) (20 * pixelDensity));
if (i == 0) {
findViewById(R.id.noData).setVisibility(View.INVISIBLE);
blockParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
} else if (i == c.getCount() - 1) {
blockParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
} else {
blockParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (5 * pixelDensity));
final LinearLayout attendance = findViewById(R.id.attendance);
final Context context = this;

new Thread(new Runnable() {
@Override
public void run() {
float pixelDensity = context.getResources().getDisplayMetrics().density;

SQLiteDatabase myDatabase = context.openOrCreateDatabase("vtop", Context.MODE_PRIVATE, null);
myDatabase.execSQL("CREATE TABLE IF NOT EXISTS attendance (id INT(3) PRIMARY KEY, course VARCHAR, type VARCHAR, attended VARCHAR, total VARCHAR, percent VARCHAR)");
Cursor c = myDatabase.rawQuery("SELECT * FROM attendance", null);

int courseIndex = c.getColumnIndex("course");
int typeIndex = c.getColumnIndex("type");
int attendedIndex = c.getColumnIndex("attended");
int totalIndex = c.getColumnIndex("total");
int percentIndex = c.getColumnIndex("percent");
c.moveToFirst();

for (int i = 0; i < c.getCount(); ++i) {
/*
The outer block
*/
final LinearLayout block = new LinearLayout(context);
LinearLayout.LayoutParams blockParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
blockParams.setMarginStart((int) (20 * pixelDensity));
blockParams.setMarginEnd((int) (20 * pixelDensity));
if (i == 0) {
findViewById(R.id.noData).setVisibility(View.INVISIBLE);
blockParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
} else if (i == c.getCount() - 1) {
blockParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
} else {
blockParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (5 * pixelDensity));
}
block.setLayoutParams(blockParams);
block.setBackground(ContextCompat.getDrawable(context, R.drawable.plain_card));
block.setOrientation(LinearLayout.VERTICAL);

/*
The inner LinearLayout
*/
LinearLayout innerBlock = new LinearLayout(context);
innerBlock.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
));
innerBlock.setOrientation(LinearLayout.HORIZONTAL);

/*
The course code TextView
*/
TextView course = new TextView(context);
TableRow.LayoutParams courseParams = new TableRow.LayoutParams(
TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT
);
courseParams.setMarginStart((int) (20 * pixelDensity));
courseParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
course.setLayoutParams(courseParams);
course.setText(c.getString(courseIndex));
course.setTextColor(getColor(R.color.colorPrimary));
course.setTextSize(20);
course.setTypeface(ResourcesCompat.getFont(context, R.font.rubik));

innerBlock.addView(course); //Adding course code to innerBlock

/*
The attendance percentage TextView
*/
String percentString = c.getString(percentIndex) + "%";

TextView percent = new TextView(context);
TableRow.LayoutParams percentParams = new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT
);
percentParams.setMarginEnd((int) (20 * pixelDensity));
percentParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
percent.setLayoutParams(percentParams);
percent.setText(percentString);
percent.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_END);
percent.setTextColor(getColor(R.color.colorPrimary));
percent.setTextSize(20);
percent.setTypeface(ResourcesCompat.getFont(context, R.font.rubik), Typeface.BOLD);

innerBlock.addView(percent); //Adding percentage to innerBlock

LinearLayout secondInnerBlock = new LinearLayout(context);
secondInnerBlock.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
));
secondInnerBlock.setOrientation(LinearLayout.HORIZONTAL);

/*
The course type code TextView
*/
TextView type = new TextView(context);
TableRow.LayoutParams typeParams = new TableRow.LayoutParams(
TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT
);
typeParams.setMarginStart((int) (20 * pixelDensity));
typeParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
type.setLayoutParams(typeParams);
type.setText(c.getString(typeIndex));
type.setTextColor(getColor(R.color.colorPrimary));
type.setTextSize(16);
type.setTypeface(ResourcesCompat.getFont(context, R.font.rubik));

secondInnerBlock.addView(type); //Adding the course type to innerBlock

/*
The attended classes TextView
*/
String attendedString = c.getString(attendedIndex) + " | " + c.getString(totalIndex);

TextView attended = new TextView(context);
TableRow.LayoutParams attendedParams = new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT
);
attendedParams.setMarginEnd((int) (20 * pixelDensity));
attendedParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
attended.setLayoutParams(attendedParams);
attended.setText(attendedString);
attended.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_END);
attended.setTextColor(getColor(R.color.colorPrimary));
attended.setTextSize(16);
attended.setTypeface(ResourcesCompat.getFont(context, R.font.rubik), Typeface.BOLD);

secondInnerBlock.addView(attended); //Adding attended classes to innerBlock

block.addView(innerBlock); //Adding innerBlock to block
block.addView(secondInnerBlock); //Adding secondInnerBlock to block

/*
Finally adding the block to the activity
*/
runOnUiThread(new Runnable() {
@Override
public void run() {
attendance.addView(block);
}
});

c.moveToNext();
}

c.close();
myDatabase.close();
}
block.setLayoutParams(blockParams);
block.setBackground(ContextCompat.getDrawable(this, R.drawable.plain_card));
block.setOrientation(LinearLayout.VERTICAL);

/*
The inner LinearLayout
*/
LinearLayout innerBlock = new LinearLayout(this);
innerBlock.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
));
innerBlock.setOrientation(LinearLayout.HORIZONTAL);

/*
The course code TextView
*/
TextView course = new TextView(this);
TableRow.LayoutParams courseParams = new TableRow.LayoutParams(
TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT
);
courseParams.setMarginStart((int) (20 * pixelDensity));
courseParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
course.setLayoutParams(courseParams);
course.setText(c.getString(courseIndex));
course.setTextColor(getColor(R.color.colorPrimary));
course.setTextSize(20);
course.setTypeface(ResourcesCompat.getFont(this, R.font.rubik));

innerBlock.addView(course); //Adding course code to innerBlock

/*
The attendance percentage TextView
*/
String percentString = c.getString(percentIndex) + "%";

TextView percent = new TextView(this);
TableRow.LayoutParams percentParams = new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT
);
percentParams.setMarginEnd((int) (20 * pixelDensity));
percentParams.setMargins(0, (int) (20 * pixelDensity), 0, (int) (5 * pixelDensity));
percent.setLayoutParams(percentParams);
percent.setText(percentString);
percent.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_END);
percent.setTextColor(getColor(R.color.colorPrimary));
percent.setTextSize(20);
percent.setTypeface(ResourcesCompat.getFont(this, R.font.rubik), Typeface.BOLD);

innerBlock.addView(percent); //Adding percentage to innerBlock

LinearLayout secondInnerBlock = new LinearLayout(this);
secondInnerBlock.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
));
secondInnerBlock.setOrientation(LinearLayout.HORIZONTAL);

/*
The course type code TextView
*/
TextView type = new TextView(this);
TableRow.LayoutParams typeParams = new TableRow.LayoutParams(
TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT
);
typeParams.setMarginStart((int) (20 * pixelDensity));
typeParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
type.setLayoutParams(typeParams);
type.setText(c.getString(typeIndex));
type.setTextColor(getColor(R.color.colorPrimary));
type.setTextSize(16);
type.setTypeface(ResourcesCompat.getFont(this, R.font.rubik));

secondInnerBlock.addView(type); //Adding the course type to innerBlock

/*
The attended classes TextView
*/
String attendedString = c.getString(attendedIndex) + " | " + c.getString(totalIndex);

TextView attended = new TextView(this);
TableRow.LayoutParams attendedParams = new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT
);
attendedParams.setMarginEnd((int) (20 * pixelDensity));
attendedParams.setMargins(0, (int) (5 * pixelDensity), 0, (int) (20 * pixelDensity));
attended.setLayoutParams(attendedParams);
attended.setText(attendedString);
attended.setTextAlignment(View.TEXT_ALIGNMENT_TEXT_END);
attended.setTextColor(getColor(R.color.colorPrimary));
attended.setTextSize(16);
attended.setTypeface(ResourcesCompat.getFont(this, R.font.rubik), Typeface.BOLD);

secondInnerBlock.addView(attended); //Adding attended classes to innerBlock

block.addView(innerBlock); //Adding innerBlock to block
block.addView(secondInnerBlock); //Adding secondInnerBlock to block

/*
Finally adding the block to the activity
*/
attendance.addView(block);

c.moveToNext();
}

c.close();
myDatabase.close();
}).start();
}
}
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