BLOG GUE WANGI

import com.badlogic.gdx.*;
import com.badlogic.gdx.graphics.*;
import com.badlogic.gdx.graphics.g2d.*;
import com.badlogic.gdx.scenes.scene2d.*;
import com.badlogic.gdx.scenes.scene2d.utils.*;
import com.badlogic.gdx.scenes.scene2d.ui.*;
import com.badlogic.gdx.utils.viewport.*;
import com.badlogic.gdx.audio.*;

public class MyGdxGame implements ApplicationListener{
Music m;
private Stage stage,stage2;
    private Texture myTexture,tex2;
    private TextureRegion myTextureRegion,reg2;
    private TextureRegionDrawable myTexRegionDrawable,draw2;
    private ImageButton button,button2;

    @Override
    public void create(){  
m =Gdx.audio.newMusic(Gdx.files.internal("ms.mp3"));
tombol1();
tombol2();
    Gdx.input.setInputProcessor(new InputMultiplexer(stage,stage2));}
   
@Override
    public void render(){
renderTombol1();
renderTombol2();}

///////////////////TOMBOL SATU////////////////////////////////
public void tombol1(){
myTexture = new Texture(Gdx.files.internal("android.jpg"));
        myTextureRegion = new TextureRegion(myTexture,0,0,100,100);
        myTexRegionDrawable = new TextureRegionDrawable(myTextureRegion);
        button = new ImageButton(myTexRegionDrawable); //Set the button up
        stage = new Stage(new ScreenViewport()); //Set up a stage for the ui
stage.addActor(button); }
public void renderTombol1(){
stage2.act(Gdx.graphics.getDeltaTime()); //Perform ui logic
        stage2.draw(); //Draw the ui
button2.addListener(new EventListener(){
@Override
public boolean handle(Event event){
m.stop();
return false;}});}
////////////////////TOMBOL DUA///////////////////////////////////////
public void tombol2(){
tex2 = new Texture(Gdx.files.internal("android.jpg"));
        reg2= new TextureRegion(tex2,50,0,100,100);
        draw2 = new TextureRegionDrawable(reg2);
        button2 = new ImageButton(draw2); //Set the button up
        button2.setPosition(300,0);
stage2 = new Stage(new ScreenViewport()); //Set up a stage for the ui
        stage2.addActor(button2); }
public void renderTombol2(){
stage.act(Gdx.graphics.getDeltaTime()); //Perform ui logic
stage.draw(); //Draw the ui
button.addListener(new EventListener(){
@Override
public boolean handle(Event even)
    {m.play(); return false;}});
}
//////////////////////////////////////////////////////////////////////
@Override
public void resize(int p1, int p2){}
@Override
public void pause(){}
@Override
public void resume(){}
@Override
public void dispose(){}
}

import com.badlogic.gdx.*;
import com.badlogic.gdx.graphics.*;
import com.badlogic.gdx.graphics.g2d.*;
import com.badlogic.gdx.math.*;

public class MyGdxGame implements ApplicationListener{ TextureRegion objectA;
TextureRegion obj1;
TextureRegion obj2;
SpriteBatch batch;
BitmapFont font;
Vector2 velocityObj1;
Rectangle RegObj1;
Rectangle RegObj2;
Boolean hidup=true;
float time;

@Override
public void create(){
Texture object1=new Texture(Gdx.files.internal("obj1.png"));
Texture object2=new Texture(Gdx.files.internal("obj2.png"));
obj1=new TextureRegion(object1,0,0,100,100);
obj2=new TextureRegion(object2,0,0,100,100);
RegObj1 =new Rectangle();
RegObj1.width=object1.getWidth();
RegObj1.height=object1.getHeight();
RegObj1.x=0;
RegObj1.y=0;
RegObj2=new Rectangle();
RegObj2.width=object2.getWidth();
RegObj2.height=object2.getHeight();
RegObj2.x=300;
RegObj2.y=0;
velocityObj1=new Vector2(10,0);
batch=new SpriteBatch();
font=new BitmapFont();
font.setColor(Color.RED);
font.setScale(2);
hidup=false;
}

@Override
public void render(){
Gdx.gl.glClearColor(1,1,1,1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT|GL20.GL_DEPTH_BUFFER_BIT);
batch.begin();
batch.draw(obj1,RegObj1.x,0,100,100);
batch.draw(obj2,RegObj2.x,0,100,100);
RegObj2.x=350;
if(hidup){
font.draw(batch,"Collision Detected",100,500);
}
batch.end();
time+=Gdx.graphics.getDeltaTime();
RegObj1.x=velocityObj1.x-=0*Gdx.graphics.getDeltaTime();
if(Gdx.input.isTouched()){
velocityObj1.x+=500*Gdx.graphics.getDeltaTime();
}
if(RegObj1.overlaps(RegObj2)){
hidup=true;
}
}

@Override
public void resize(int width, int height){
}

@Override
public void pause(){
}

@Override
public void resume(){
}

@Override
public void dispose()
{
batch.dispose();
font.dispose();
}

}

Layar 1

import com.badlogic.gdx.*;
import com.badlogic.gdx.graphics.*;
import com.badlogic.gdx.graphics.g2d.*;
public class MyGdxGame extends Game{
SpriteBatch batch;
BitmapFont font;

@Override
public void create(){
batch = new SpriteBatch();   
font = new BitmapFont();
font.setColor(Color.RED);
font.setScale(2);}

@Override
public void render(){       
//warna background
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.begin();
//tata letak text ganti X dan Y dengan angka
font.draw(batch, "tap dimana saja untuk pindah layar", 0, 400);
batch.end();
if(Gdx.input.isTouched()){
this.setScreen(new MainMenuScreen(this));}
super.render();}

@Override
public void dispose(){
batch.dispose();
font.dispose();}
   
@Override
public void resize(int width, int height){}
@Override
public void pause(){}
@Override
public void resume(){}
}

Layar 2

import com.badlogic.gdx.*;
import com.badlogic.gdx.graphics.*;
import com.badlogic.gdx.graphics.g2d.*;
import javax.microedition.khronos.opengles.*;
public class MainMenuScreen implements Screen{
final MyGdxGame game;
SpriteBatch batch;
Texture image;
TextureRegion imageRegion;
OrthographicCamera camera;
public MainMenuScreen(final MyGdxGame game){
this.game = game;}

@Override
public void show(){
camera = new OrthographicCamera();
camera.setToOrtho(false, 800, 480);
image=new Texture(Gdx.files.internal("android.jpg"));
imageRegion=new TextureRegion(image,0,0,1000,1000);
batch=new SpriteBatch();}

@Override
public void render(float p1){
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
batch.begin();
batch.draw(imageRegion,0,0,200, 200);
batch.end();}

@Override
public void resize(int p1, int p2){}
@Override
public void hide(){}
@Override
public void pause(){}
@Override
public void resume(){}
@Override
public void dispose(){}
}

//tanpa controller

VideoView simpleVideoView = (VideoView) findViewById(R.id.vd); // initiate a video view
simpleVideoView.setVideoURI(Uri.parse("android.resource://" + this.getPackageName() + "/" + R.raw.v));
simpleVideoView.start();

Use the permission Internet

MainActivity.java
import android.os.Bundle;
import android.app.*;
import com.google.android.gms.ads.AdRequest; //Import class AdRequest
import com.google.android.gms.ads.AdView;    //import class Adview

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        AdView mAdView = (AdView) findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }
}

Main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
    <TextView android:text="@string/app_name" android:layout_width="wrap_content"
android:layout_height="wrap_content" />
    <!--menambahkan elemen AdView untuk menampilkan iklan/ads-->
    <com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="@string/banner_ad_unit_id">
    </com.google.android.gms.ads.AdView>
</RelativeLayout>

String.xml

<string name="banner_ad_unit_id">ca-app-pub-3940256099942544/6300978111</string>

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body bgcolor="white">
<h1>Melki Mitsuki</h1><br>
<div id="tambah">tambah
</div>
<div id="remove">remove
</div>
<script>
$(document).ready(function(){
$('#tambah').click(function(){

$('#tambah').append('<div>tambah element berada di dalam dan di bagian bawah ganti append dengan prepend (untuk element berada di atas) after (eleement berada di bagian bawah tapi di luar) before (element berada di atas tapi diluar) remove (untuk menghapus elemen menurut id) empty (menghapus isi dari sebuah element menurut id)</div>');

});
$('#remove').click(function(){
$('#tambah').remove();
});

});
</script>
</body>
</html>

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body bgcolor="white">
<h1>Melki Mitsuki</h1><br>
<form>
<input type="text" id="t"/>
<input type="submit" value="klik"/>
</form>
<script>
$(document).ready(function(){
$('form').submit(function(){
var isi=($('#t').val());
$('h1').text(isi);
event.preventDefault();
});

});
</script>
</body>
</html>

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<h1>Melki Mitsuki</h1><br>
<div id="div1">gunakan # untuk idi</div>
<div class="div2">gunakan titik untuk class</div>
<div class="div3">ini div3</div>
<div class="div3">ini div3</div>
<div class="div3">ini div3</div>
<div class="div3">ini div3</div>
<script>
$('h1').click(function(){
$('h1').css('color','red');

});

$('#div1').click(function(){
$('#div1').css('color','green');
});
$('.div2').click(function(){
$('.div2').css('color','yellow');
});
$('.div3').click(function(){
$(this).css('color','red');

});
</script>
<h3> kalian dapat mengganti event click dengan mouseenter dan mouseleave</h3>
</body>
</html>

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<h1>Melki Mitsuki</h1><br>
<div id="div1">gunakan # untuk idi</div>
<div class="div2">gunakan titik untuk class</div>
<script>
$(document).ready(function(){
$('h1').css('color','red');
$('#div1').css('color','blue');
$('.div2').css('color','green');

});
</script>
</body>
</html>

https://www.petanikode.com/html-canvas/

Langkah Awal select canvas

<!DOCTYPE html>
<html>
<head>
<meta charset goyang dombret="utf-8">
<title>Tutorial HTML 5 Canvas</title>
</head>
<body>
<canvas id="myCanvas" width="640" height="480" style="border:1px solid #000000;">
</canvas>

<script type="text/javascript"> var canvas = document.getElementById("myCanvas"); var ctx = canvas.getContext("2d"); </script>

</body> </html>

Code Code Menggambar pada Canvas

1. ctx.fillRect(x,y,1,1); 
menggambar titik 1px

2. ctx.beginPath() 
untuk memulai/ membuat garis baru.

3. ctx.moveTo(x,y) 
untuk menentukan titik awal

4. ctx.lineTo(x,y) 
untuk menentukan titik akhir

5. ctx.stroke() 
untuk menggambar garisnya.

6. ctx.strokeRect(x,y,w,h)
persegi dengan garis (outline) saja.

7. ctx.fillRect(x,y,w,h) 
persegi dengan polesan warna (default-nya hitam).

8. ctx.clearRect(x,y,w,h)
persegi transparan untuk menghapus.

Seperti biasa, kita harus memberikan titik koordinat x dan y. Sementara nilai w dan h untuk lebar dan tingginya.

9. ctx.closePath()
untuk menggambar garis dari titik terakhir ke titik awal secara otomatis.

10. strokeText("text",x,y) 
untuk teks dengan garis luar (outline) saja.

11. fillText("text",x,y) 
untuk teks dengan warna (default hitam).

12. ctx.font = "64px Arial";
Jenis dan ukuran font

13. drawImage(img, x, y);
Menambahkan gambar

14. var image= new Image();
image.src="./bird.png";
ctx.drawImage(image,10,10,200,200);
Menambahkan image ke canvas

AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />

MainActivity.java

import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.*;
import android.widget.*;
public class MainActivity extends Activity {
Button button;
ProgressDialog progressdialog;
public static final int Progress_Dialog_Progress = 0;
String ImageURL ;
URL url;
URLConnection urlconnection ;
int FileSize;
InputStream inputstream;
OutputStream outputstream;
byte dataArray[] = new byte[1024];
long totalSize = 0;
EditText txt, edit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
edit = (EditText)findViewById(R.id.edit);
button = (Button)findViewById(R.id.lihat);
    txt =(EditText)findViewById(R.id.text);
button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        ImageURL= edit.getText().toString();
new ImageDownloadWithProgressDialog().execute(ImageURL);
}});}
        public class ImageDownloadWithProgressDialog extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
    super.onPreExecute();
showDialog(Progress_Dialog_Progress);}
@Override
protected String doInBackground(String... aurl) {
int count;
try {
url = new URL(aurl[0]);
urlconnection = url.openConnection();
urlconnection.connect();
FileSize = urlconnection.getContentLength();
inputstream = new BufferedInputStream(url.openStream());
outputstream = new FileOutputStream("/sdcard/downloadurl.txt");
while ((count = inputstream.read(dataArray)) != -1) {
totalSize += count;
publishProgress(""+(int)((totalSize*100)/FileSize));
outputstream.write(dataArray, 0, count);}
outputstream.flush();
outputstream.close();
inputstream.close();
} catch (Exception e) {}
return null;}
protected void onProgressUpdate(String... progress) {
progressdialog.setProgress(Integer.parseInt(progress[0]));}
@Override
protected void onPostExecute(String unused) {
    dismissDialog(Progress_Dialog_Progress);
try {
FileReader fr = new FileReader("/sdcard/downloadurl.txt");
BufferedReader br = new BufferedReader(fr);
String text;
while ((text = br.readLine()) != null)
    txt.setText(text);}
catch (FileNotFoundException fnfe) {
fnfe.getMessage();}
catch (IOException ioe) {
ioe.getMessage();}
Toast.makeText(MainActivity.this, "Text Downloaded Successfully", Toast.LENGTH_LONG).show();
}} protected Dialog onCreateDialog(int id) {
switch (id) { case Progress_Dialog_Progress:
progressdialog = new ProgressDialog(MainActivity.this);
progressdialog.setMessage("Downloading Text From Server...");
progressdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressdialog.setCancelable(false);
progressdialog.show();
return progressdialog;
    default:
return null;}}}

public void simpan_data(){
SavePreferences("PrefDemo","save");
}

private void SavePreferences(String key, String value) {
        SharedPreferences sharedPreferences = this.getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(key, value);
        editor.commit();  }

public void lihat_data(){
showPreferences("PrefDemo");
}

private void showPreferences(String key){
        SharedPreferences sharedPreferences =
this.getPreferences(Context.MODE_PRIVATE);
        String Data = sharedPreferences.getString(key, "");
       TexView.setText(Data);
}

AndroidManifest.xml

MainActivity.java

import android.content.Intent;
import android.app.*;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;

// nama kelas harus sama dengan nama file nya
public class MainActivity extends Activity {

    Button bKirim;
    RadioGroup radio;
    EditText tNama;
    EditText tHobi;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        inisialisasi();

        bKirim.setOnClickListener(new View.OnClickListener() {
@Override            public void onClick(View view) {
Intent i = new Intent(getApplicationContext(), second.class);

i.putExtra("variabelnama", tNama.getText().toString());
i.putExtra("variabelumur", tHobi.getText().toString());
int id = radio.getCheckedRadioButtonId();
RadioButton radiobutton = (RadioButton)findViewById(id);
i.putExtra("variabelkelamin", radiobutton.getText().toString());
startActivity(i);
}
});

    }

    private void inisialisasi() {
        bKirim = (Button)findViewById(R.id.kirim);
        radio = (RadioGroup)findViewById(R.id.jeniskelamin);
        tNama = (EditText)findViewById(R.id.nama);
        tHobi= (EditText)findViewById(R.id.hobi);

    }
}

second.java

import android.content.Intent;
import android.app.*;
import android.os.Bundle;
import android.widget.TextView;

public class second extends Activity {

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondmain);

        Intent i = getIntent();
        String nerimanama = i.getStringExtra("variabelnama");
        String nerimaumur = i.getStringExtra("variabelumur");
        String kelamin  = i.getStringExtra("variabelkelamin");
        TextView nama = (TextView)findViewById(R.id.namaValue);
        TextView umur = (TextView)findViewById(R.id.hobivalue);
        TextView jk = (TextView)findViewById(R.id.jeniskelaminvalue);
        nama.setText(nerimanama);
        umur.setText(nerimaumur);
        jk.setText(kelamin);
    }
}

masuk ke folder res
buat folder menu dan main.xml di dalamnya

Cara Import Library (firebase)

1. bikin project baru kemudian edit file build.gradle pertama dan tambahkan classpath untuk firebase
sperti ini

classpath 'com.google.gms:google-services:3.2.0' // google-services plugin

kemudian tambahkan maven dibawah jcenter() sperti ini

allprojects {
    repositories {
        jcenter()
maven {
        url "https://maven.google.com" // Google's Maven repository
}
    }
}
       
2. setelah itu edit file build.gradle yang kedua (module)
tambahkan compile untuk firebase didalam dependencies

 
 
dan letakan aplly plugin di paling bawah

apply plugin: 'com.google.gms.google-services'

3. terahir tambahkan library firebase.jar kedalam folder libs 
buat folder baru (libs) di dalam folder yang ada folder src dan java

4.klik dan tahan file firebase.jar nya lalu klik add to projek nanti otomatis akan muncul dialog untuk mendowload maven library

selesai

nb: jika download maven library tidak muncul bisa library di dependencies dan di firebase.jar tidak sama versinya
Kedua
coba tutup IDENYA atau pindah projek kemudian buka kembali projek yang tadi nanti akan muncul maven download library

AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />

MainActivity.java

import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.*;

public class MainActivity extends Activity {

Button button;
ProgressDialog progressdialog;
public static final int Progress_Dialog_Progress = 0;
String ImageURL = "https://www.android-examples.com/wp-content/uploads/2016/04/demo_download_image.jpg" ;
URL url;
URLConnection urlconnection ;
int FileSize;
InputStream inputstream;
OutputStream outputstream;
byte dataArray[] = new byte[1024];
long totalSize = 0;
ImageView imageview;
String GetPath ;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

button = (Button)findViewById(R.id.button);
imageview = (ImageView)findViewById(R.id.image);

button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

new ImageDownloadWithProgressDialog().execute(ImageURL);

}
});
}

public class ImageDownloadWithProgressDialog extends AsyncTask<String, String, String> {

@Override
protected void onPreExecute() {

super.onPreExecute();

showDialog(Progress_Dialog_Progress);
}

@Override
protected String doInBackground(String... aurl) {

int count;

try {

url = new URL(aurl[0]);
urlconnection = url.openConnection();
urlconnection.connect();

FileSize = urlconnection.getContentLength();

inputstream = new BufferedInputStream(url.openStream());
outputstream = new FileOutputStream("/sdcard/demo_photo1.jpg");

while ((count = inputstream.read(dataArray)) != -1) {

totalSize += count;

publishProgress(""+(int)((totalSize*100)/FileSize));

outputstream.write(dataArray, 0, count);
}

outputstream.flush();
outputstream.close();
inputstream.close();

} catch (Exception e) {}
return null;

}
protected void onProgressUpdate(String... progress) {

progressdialog.setProgress(Integer.parseInt(progress[0]));
}

@Override
protected void onPostExecute(String unused) {

dismissDialog(Progress_Dialog_Progress);

GetPath = Environment.getExternalStorageDirectory().toString() + "/demo_photo1.jpg";

imageview.setImageDrawable(Drawable.createFromPath(GetPath));

Toast.makeText(MainActivity.this, "Image Downloaded Successfully", Toast.LENGTH_LONG).show();
}
}

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case Progress_Dialog_Progress:

progressdialog = new ProgressDialog(MainActivity.this);
progressdialog.setMessage("Downloading Image From Server...");
progressdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressdialog.setCancelable(false);
progressdialog.show();
return progressdialog;

default:

return null;
}
}

}

MainActivity.java

import android.app.*;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;

public class MainActivity extends Activity {
    GridView grid;
    int[] imageId = {
R.drawable.fb1,
R.drawable.item, };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        CustomGrid adapter = new CustomGrid(this,imageId);
        grid = (GridView) findViewById(R.id.grid);
        grid.setAdapter(adapter);
        grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(MainActivity.this, "You select ",
   Toast.LENGTH_SHORT).show();
}
});
    }
}

CustomGrid.java

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomGrid extends BaseAdapter {
    private Context mContext;
    private final int[] Imageid;
    public CustomGrid(Context c, int[] Imageid) {
    mContext = c;
    this.Imageid = Imageid;
    }
    @Override
    public int getCount() {
    return Imageid.length;
    }
    @Override
    public Object getItem(int position) {
    return null;
    }
    @Override
    public long getItemId(int position) {
    return 0;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View grid;
        LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if (convertView == null) {
            grid = new View(mContext);
            grid = inflater.inflate(R.layout.grid_single, null);
            ImageView imageView = (ImageView) grid.findViewById(R.id.grid_image);
            imageView.setImageResource(Imageid[position]);
        } else {
            grid = (View) convertView;
        }
        return grid;
    }
}

Main.xml

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

    <GridView
        android:id="@+id/grid"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginTop="15dp"
        android:columnWidth="100dp"
        android:gravity="center"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth" />
</LinearLayout>

grid_single.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp">

<ImageView
android:id="@+id/grid_image"
android:layout_width="100dp"
android:layout_height="150dp"/>

</LinearLayout>

https://www.google.com/amp/s/rekayuu.wordpress.com/2014/11/03/tugas-kuliahmembuat-alarm-sederhana-untuk-android/amp/

package com.mycompany.myapp;
import android.app.*;
import android.content.*;
import android.os.*;
import android.widget.*;
public class MainActivity extends Activity {
@Override
private TextView batteryTxt;
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context ctxt, Intent intent) {
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
batteryTxt.setText(String.valueOf(level) + "%");
if(level==89){batteryTxt.setText("okokokok");}}};
@Override
public void onCreate(Bundle b) {
super.onCreate(b);
setContentView(R.layout.main);
batteryTxt = (TextView) this.findViewById(R.id.l);
this.registerReceiver(this.mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));}}

package com.mycompany.myapp;

import java.io.IOException;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.Activity;
import android.app.WallpaperManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get the view from activity_main.xml
setContentView(R.layout.main);

// Create an actionbar
ActionBar actionBar = getActionBar();
actionBar.show();

// Locate ImageView in activity_main.xml
ImageView mywallpaper = (ImageView) findViewById(R.id.wallpaper);

// Attach image into ImageView
mywallpaper.setImageResource(R.drawable.mery);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

// Create an actionbar menu
menu.add("Set as Wallpaper")
// Add a new Menu Button
.setOnMenuItemClickListener(this.SetWallpaperClickListener)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);

return super.onCreateOptionsMenu(menu);
}

// Capture actionbar menu item click
OnMenuItemClickListener SetWallpaperClickListener = new OnMenuItemClickListener() {

public boolean onMenuItemClick(MenuItem item) {

// Retrieve a WallpaperManager
WallpaperManager myWallpaperManager = WallpaperManager
.getInstance(MainActivity.this);

try {
// Change the current system wallpaper
myWallpaperManager.setResource(R.drawable.mery);

// Show a toast message on successful change
Toast.makeText(MainActivity.this,
   "Wallpaper successfully changed", Toast.LENGTH_SHORT)
.show();

} catch (IOException e) {
// TODO Auto-generated catch block
}

return false;
}
};
}

AndroidManifest.xml

<uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.SET_WALLPAPER" >
    </uses-permission>

Main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/wallpaper"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>