BASIC ANDROID TUTORIALS

• Project: Bai07 [[sudo chown -R $USER: $HOME]]
• Description:
• Trick:

Create a ListView Basic

- This is ListView Basic Of Android Studio	
<?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">

    <ListView
	android:id="@+id/lvList"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content" />
</LinearLayout>

- Code basic view result into ListView
private ListView mLvList;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_list_coban);
    mLvList = (ListView) findViewById(R.id.lvList);
    List<String> stringList = new ArrayList<>();
    for (int i = 0; i < 100; i++) {
        stringList.add(String.format("%s%d", "Phan tu thu:", i));
    }
    ArrayAdapter arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, stringList);
    mLvList.setAdapter(arrayAdapter);
}

Customizing ListView With BaseApdater[Class to Adapter to transform data from Activity to ListView]

- Customize GUI [Only ListView contain widgetandroid is as Button, ListView, TextView, ..]
<LinearLayout 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"
    android:background="#ff00ff"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

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

	<LinearLayout
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:orientation="horizontal"
	    android:padding="5dp">

	    <TextView
	        android:id="@+id/tvTitle"
	        android:layout_width="0dp"
	        android:layout_height="wrap_content"
	        android:layout_weight="0.3"
	        android:text="Title: "
	        android:textColor="#fff"
	        android:textStyle="bold" />

	    <EditText
	        android:id="@+id/edtTitle"
	        android:layout_width="0dp"
	        android:layout_height="wrap_content"
	        android:layout_toRightOf="@+id/tvTitle"
	        android:layout_weight="1"
	        android:background="#fff"
	        android:padding="5dp" />
	</LinearLayout>

	<LinearLayout
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:orientation="horizontal"
	    android:padding="5dp">

	    <TextView
	        android:id="@+id/tvContent"
	        android:layout_width="0dp"
	        android:layout_height="wrap_content"
	        android:layout_weight="0.3"
	        android:text="Content: "
	        android:textColor="#fff"
	        android:textStyle="bold" />

	    <EditText
	        android:id="@+id/edtContent"
	        android:layout_width="0dp"
	        android:layout_height="wrap_content"
	        android:layout_toRightOf="@+id/tvContent"
	        android:layout_weight="1"
	        android:background="#fff"
	        android:padding="5dp" />
	</LinearLayout>


    </LinearLayout>

    <Button
	android:id="@+id/btnAdd"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_gravity="center"
	android:layout_marginTop="5dp"
	android:background="#00cc00"
	android:text="Add"
	android:textColor="#fff" />

    <ListView
	android:id="@+id/lvArray"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_marginTop="5dp"
	android:background="#fff"
	android:headerDividersEnabled="false"
	android:footerDividersEnabled="false"
	android:divider="#fcc0"
	android:dividerHeight="3dp"
	android:padding="5dp" />
</LinearLayout>

- Note "BaseAdapter"
- R.layout.item_listview_user => YOU CREATE A NEW FILE XML TO CONFIGURA LISTVIEW 

<?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:background="?android:attr/activatedBackgroundIndicator"
    android:orientation="vertical">

    <TextView
	android:id="@+id/tvTitle"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="Name"
	android:textColor="#ff0000"
	android:textSize="20dp" />

    <TextView
	android:id="@+id/tvContent"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="Content" />
</LinearLayout>

- Image to description item ListView when you customize 

- Acitivity process ListView

package com.example.binc.buoi7.listview_custom_base;

import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

import com.example.binc.buoi7.R;
import com.example.binc.buoi7.User;

import java.util.ArrayList;
import java.util.List;

public class BaseActivity extends AppCompatActivity {

    private CustomListAdapter mCustomListAdapter;
    private EditText mEdTitle;
    private EditText mEdContent;
    private ListView mLvMain;
    private List<User> mUsers;

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

	mLvMain= (ListView) findViewById(R.id.lvArray);
	mEdContent = (EditText) findViewById(R.id.edtContent);
	mEdTitle = (EditText) findViewById(R.id.edtTitle);

	mUsers = new ArrayList<>();

	mUsers.add(new User("SamSung", "aaaaaaaaaaa"));
	mUsers.add(new User("SamSung1", "aaaaaaaaaaa1"));


	mCustomListAdapter = new CustomListAdapter(this, mUsers);
	mLvMain.setAdapter(mCustomListAdapter);
	//click item listview
	mLvMain.setOnItemClickListener(new AdapterView.OnItemClickListener() {
	    @Override
	    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
	        User user = (User) parent.getItemAtPosition(position);
	        Toast.makeText(BaseActivity.this, user.getTitle() + "--" + user.getContent(), Toast.LENGTH_LONG).show();
	    }
	});

	mLvMain.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
	    @Override
	    public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
	        showAlertDialog(position);
	        return false;
	    }
	});
	mLvMain.setOnScrollListener(new AbsListView.OnScrollListener() {
	    @Override
	    public void onScrollStateChanged(AbsListView view, int scrollState) {
	        Toast.makeText(BaseActivity.this, "Scroll", Toast.LENGTH_LONG).show();
	    }

	    @Override
	    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
	        // load more
	    }
	});
	//click add
	((Button) findViewById(R.id.btnAdd)).setOnClickListener(new View.OnClickListener() {
	    @Override
	    public void onClick(View v) {
	        if(mEdTitle.getText().toString().equals("")||mEdContent.getText().toString().equals("")){
	            Toast.makeText(BaseActivity.this, "Please input valid data!!", Toast.LENGTH_SHORT).show();
	            return;
	        }else {
	            mUsers.add(new User(mEdTitle.getText().toString().trim(), mEdContent.getText().toString().trim()));
	            mCustomListAdapter.notifyDataSetChanged();
	        }
	    }
	});

    }

    private void showAlertDialog(final int position) {
	AlertDialog.Builder builder1 = new AlertDialog.Builder(BaseActivity.this);
	builder1.setTitle("Confirm Delete");
	builder1.setMessage("Do yout want delete item!!");
	builder1.setCancelable(true);

	builder1.setPositiveButton(
	        "Yes",
	        new DialogInterface.OnClickListener() {
	            public void onClick(DialogInterface dialog, int id) {
	                mUsers.remove(position);
	                mCustomListAdapter.notifyDataSetChanged();
	                dialog.cancel();
	            }
	        });

	builder1.setNegativeButton(
	        "No",
	        new DialogInterface.OnClickListener() {
	            public void onClick(DialogInterface dialog, int id) {
	                dialog.cancel();
	            }
	        });

	AlertDialog alert11 = builder1.create();
	alert11.show();
    }
}

Fix Error Bundle Quickly

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
	jcenter()
    }
    dependencies {
	classpath 'com.android.tools.build:gradle:2.2.2'

	// NOTE: Do not place your application dependencies here; they belong
	// in the individual module build.gradle files
    }
}

allprojects {
    repositories {
	jcenter()
    }
}

-- app[Gradle]

	apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.0"
    defaultConfig {
	applicationId "vn.udn.dut.loginfacebookapp"
	minSdkVersion 15
	targetSdkVersion 25
	versionCode 1
	versionName "1.0"
	testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
	release {
	    minifyEnabled false
	    proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
	}
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
	exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.0.0'
    testCompile 'junit:junit:4.12'
}