Number convert int to string Java Android example code

1. File->Project Structure Ctrl + Alt + Shift + S



2. Select module and Dependencies Tab



3. Click on + PLUS button (right upper corner)



4. Select library


Click OK, OK

import android.os.Build.VERSION;
//
int nSdkVersion = Integer.parseInt(Build.VERSION.SDK);
int nApiVersion = VERSION.SDK;

Platform Version	API Level
Android 4.0	14
Android 3.2	13
Android 3.1.x	12
Android 3.0.x	11
Android 2.3.4	10
Android 2.3.3	10
Android 2.3.2	9
Android 2.3.1	9
Android 2.3	9
Android 2.2.x	8
Android 2.1.x	7
Android 2.0.1	6
Android 2.0	5
Android 1.6	4
Android 1.5	3
Android 1.1	2
Android 1.0	1

TableRow TableLayout table row add delete remove removeview addview get table row index indexOfChild create table row dynamically TextView dynamically Android example
Main.java

TableLayout table = (TableLayout)findViewById(R.id.table);
TableRow row = (TableRow)findViewById(R.id.row);

// get table row index android.
int nIndex = table.indexOfChild(row);
table.removeView(row); // invisible and height == 0
// add row into same place 
table.addView(row, nIndex); // visible

// add row into certain position
table.addView(row, 3); // visible

// create new TableRow dynamically 
TableRow tr = new TableRow(this);
         tr.setLayoutParams(new LayoutParams(
                        LayoutParams.FILL_PARENT,
                        LayoutParams.WRAP_CONTENT));

// create own function for append TableRow
   private void appendRow(TableLayout table) {
        TableRow row = new TableRow(this);

        TextView hLabel = new TextView(this);
        hLabel.setText("Some text");
        hLabel.setPadding(3, 3, 3, 3);

        TextView hNextLabel = new TextView(this);
        hNextLabel.setText("Next text");
        hNextLabel.setPadding(3, 3, 3, 3);
        hNextLabel.setGravity(Gravity.RIGHT | Gravity.TOP);

        row.addView(hLabel, new TableRow.LayoutParams(1));
        row.addView(hNextLabel, new TableRow.LayoutParams());

        table.addView(row, new TableLayout.LayoutParams());
    }

main.xml ScrollView, TableLayout, TableRow, TextView Android xml layout example

<ScrollView xmlns:android="//schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent">
    <TableLayout
                android:id="@+id/table"
                  android:layout_width="fill_parent"
                 android:layout_height="fill_parent">
        <TableRow>
            <TextView android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:text="Row index 0"/>
        </TableRow>
        <TableRow android:id="@+id/row">
            <TextView android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:text="Row index 1"/>
        </TableRow>
        <TableRow>
            <TextView android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:text="Row index 2"/>
        </TableRow>
        <TableRow>
            <TextView android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:text="Row index 3"/>
        </TableRow>
		</TableLayout>
</ScrollView>

Basic shortcuts for Android Emulator.

Emulated Device Key	Keyboard Key
Home	HOME
Menu (left softkey)	F2 or Page-up button
Star (right softkey)	Shift-F2 or Page Down
Back	ESC
Call/dial button	F3
Hangup/end call button	F4
Search	F5
Power button	F7
Audio volume up button	KEYPAD_PLUS, Ctrl-5
Audio volume down button	KEYPAD_MINUS, Ctrl-F6
Camera button	Ctrl-KEYPAD_5, Ctrl-F3
Switch to previous layout orientation (for example, portrait, landscape)	KEYPAD_7, Ctrl-F11
Switch to next layout orientation (for example, portrait, landscape)	KEYPAD_9, Ctrl-F12
Toggle cell networking on/off	F8
Toggle code profiling	F9 (only with -trace startup option)
Toggle fullscreen mode	Alt-Enter
Toggle trackball mode	F6
Enter trackball mode temporarily (while key is pressed)	Delete
DPad left/up/right/down	KEYPAD_4/8/6/2
DPad center click	KEYPAD_5
Onion alpha increase/decrease	KEYPAD_MULTIPLY(*) / KEYPAD_DIVIDE(/)

More about Android Emulator

The exact physical pixels per inch of the screen
Get size of pixel
Get DPI
Get count of pixels per inch

        float mXDpi;
        float mYDpi;
           DisplayMetrics metrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(metrics);
            mXDpi = metrics.xdpi; // The exact physical pixels per inch of the screen in the X dimension. 
            mYDpi = metrics.ydpi;
          float  mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre
          float  mMetersToPixelsY = mYDpi / 0.0254f;