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2014.02.03
Android アプリ サンプル 基本

短縮ダイヤルアプリ | AndroidBasic卒業生作成アプリ

nabe
  • 登録画面
    • EntryActivity.java
      • package com.example.speeddialing;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class EntryActivity extends Activity implements OnClickListener {

	private MyOpenHelper helper = new MyOpenHelper(this);
	private SQLiteDatabase db;

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

		Button button = (Button) findViewById(R.id.button1);
		button.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		db = helper.getWritableDatabase();

		EditText editName = (EditText) findViewById(R.id.editName);
		EditText editNumber = (EditText) findViewById(R.id.editNumber);

		String name = editName.getText().toString();
		String number = editNumber.getText().toString();

		if (editName.equals("")) {
			Toast.makeText(this, "名前を入力してください。", Toast.LENGTH_SHORT).show();
		} else if (editNumber.equals("")) {
			Toast.makeText(this, "番号を入力してください。", Toast.LENGTH_SHORT).show();
		} else {
			ContentValues values = new ContentValues();
			values.put(Table.NAME, name);
			values.put(Table.NUMBER, number);
			db.insert(Table.TABLE_NAME, Table.NAME, values);

			editName.getEditableText().clear();
			editNumber.getEditableText().clear();

			Toast.makeText(this, "登録しました。", Toast.LENGTH_SHORT).show();

			Intent intent = new Intent(EntryActivity.this, MainActivity.class);
			startActivity(intent);
		}
	}

}
    • activity_entry.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" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="名前" />

    <EditText
        android:id="@+id/editName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName" >

        <requestFocus />
    </EditText>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="電話番号" />

    <EditText
        android:id="@+id/editNumber"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="登録" />

</LinearLayout>
  • 項目の詳細画面
    • RevisionActivity.java
      • package com.example.speeddialing;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class RevisionActivity extends Activity implements OnClickListener {

	private MyOpenHelper helper = new MyOpenHelper(this);
	private SQLiteDatabase db;
	private Cursor c;

	private EditText editName2;
	private EditText editNumber2;
	private Long id;

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

		db = helper.getReadableDatabase();

		Intent intent = getIntent();
		id = intent.getLongExtra("id", 1);

		c = db.query(Table.TABLE_NAME,
				new String[] { Table.NAME, Table.NUMBER }, "_id = ?",
				new String[] { String.valueOf(id) }, null, null, null);

		c.moveToFirst();

		editName2 = (EditText) findViewById(R.id.editName2);
		editNumber2 = (EditText) findViewById(R.id.editNumber2);

		editName2.setText(c.getString(c.getColumnIndex(Table.NAME)));
		editNumber2.setText(c.getString(c.getColumnIndex(Table.NUMBER)));

		Button button2 = (Button) findViewById(R.id.button2);
		Button button3 = (Button) findViewById(R.id.button3);
		Button button4 = (Button) findViewById(R.id.button4);

		button2.setOnClickListener(this);
		button3.setOnClickListener(this);
		button4.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {

		db = helper.getWritableDatabase();

		switch (v.getId()) {
		case R.id.button2:
			ContentValues values = new ContentValues();
			values.put(Table.NAME, editName2.getText().toString());
			values.put(Table.NUMBER, editNumber2.getText().toString());
			db.update(Table.TABLE_NAME, values, "_id = ?",
					new String[] { String.valueOf(id) });

			Toast.makeText(this, "上書きしました。", Toast.LENGTH_SHORT).show();

			editName2.getEditableText().clear();
			editNumber2.getEditableText().clear();

			Intent intent = new Intent(RevisionActivity.this,
					MainActivity.class);
			startActivity(intent);
			break;

		case R.id.button3:
			db.delete(Table.TABLE_NAME, "_id = ?",
					new String[] { String.valueOf(id) });
			Toast.makeText(RevisionActivity.this, "削除しました。", Toast.LENGTH_SHORT)
					.show();
			Intent intent2 = new Intent(RevisionActivity.this,
					MainActivity.class);
			startActivity(intent2);
			break;

		case R.id.button4:
			Uri uri = Uri.parse("tel:"
					+ c.getString(c.getColumnIndex(Table.NUMBER)));
			Intent intent3 = new Intent(Intent.ACTION_CALL, uri);
			startActivity(intent3);
			break;

		default:
			break;
		}

	}

}
    • activity_revision.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" >

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

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="名前" />

        <EditText
            android:id="@+id/editName2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:inputType="textPersonName" >

            <requestFocus />
        </EditText>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="電話番号" />

        <EditText
            android:id="@+id/editNumber2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </LinearLayout>

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

        <Button
            android:id="@+id/button2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="修正" />

        <Button
            android:id="@+id/button3"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="削除" />
    </LinearLayout>

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

        <Button
            android:id="@+id/button4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="電話" />
    </LinearLayout>

</LinearLayout>
  • スプラッシュ画面
    • SplashActivity.java
      • package com.example.speeddialing;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;

public class SplashActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_splash);

		Handler handler = new Handler();
		handler.postDelayed(new Runnable() {

			@Override
			public void run() {
				Intent intent = new Intent(SplashActivity.this,
						MainActivity.class);
				startActivity(intent);
			}
		}, 5000);

	}
}
    • activity_splash
      • <?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" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/splash" />

</LinearLayout>
  • 「データベース」の生成ファイル
    • MyOpenHelper.java
      • package com.example.speeddialing;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class MyOpenHelper extends SQLiteOpenHelper {

	public MyOpenHelper(Context context) {
		super(context, Table.DB, null, 1);
	}

	@Override
	public void onCreate(SQLiteDatabase db) {
		db.execSQL("create table " + Table.TABLE_NAME + "(" + Table.ID
				+ " integer primary key, " + Table.NAME + " text not null, "
				+ Table.NUMBER + " text not null );");
	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

	}

}
  • Table.java
    • package com.example.speeddialing;

public class Table {

	public static final String DB = "DB";
	public static final String TABLE_NAME = "person";

	public static final String ID = "_id";
	public static final String NAME = "name";
	public static final String NUMBER = "number";

}

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