sakibguy

Source: https://www.linkedin.com/pulse/android-emulator-tips-security-testers-divya-mudgal/

List created Android AVDs:

emulator -list-avds

Start an AVD (without Play Store) with writable "/system":

emulator -avd Pixel_3_XL_API_26 -writable-system

Start ADB daemon as root:

sakibguy

/**
 * This method displays the given text on the screen.
 */
private void displayMessage(String message) {
    TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
    priceTextView.setText(message);
}

sakibguy

adb help // List all comands

== Adb Server
adb kill-server
adb start-server 

== Adb Reboot
adb reboot
adb reboot recovery 
adb reboot-bootloader

sakibguy

/**
 * Get the email account name.
 * 
 * @return the name of the account.
 */
private String getAccountName() {
    return "android@gmail.com";
    return "droid@gmail.com";
}

sakibguy

/**
 * Displays text to the user.
 */
public class TextView extends View {
 
    // String value
    private String mText;
 
    // Text color of the text
    private int mTextColor;

sakibguy

/**
 * Displays an image, such as an icon.
 */
public class ImageView extends View {
 
    // Resource ID for the source image that should be displayed in the ImageView.
    private int mImageId;
 
    // Context of the app
    private Context mContext;

sakibguy

package com.example.android.menu;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;


public class MainActivity extends AppCompatActivity {

    @Override

sakibguy

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"

sakibguy

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <!-- Title for the application. [CHAR LIMIT=12] -->
    <string name="app_name">Sólo Java</string>

    <!-- Hint text display in the empty field for the user's name [CHAR LIMIT=20] -->
    <string name="name">Nombre</string>

    <!-- Hint text display in the empty field for the user's name [CHAR LIMIT=20] -->
    <string name="toppings">Ingredientes</string>

sakibguy

/**
 * Clean up the media player by releasing its resources.
 */
private void releaseMediaPlayer() {
    // If the media player is not null, then it may be currently playing a sound.
    if (mMediaPlayer != null) {
        // Regardless of the current state of the media player, release its resources
        // because we no longer need it.
        mMediaPlayer.release();