BLOG GUE WANGI

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));}}