Zi 字媒體

android程式設計實例入門 -Sample改寫分享 (2014/10/31)   此範例為程式碼(08\Sample05)的改寫，利用一個LinearLayout、一個ListView來實作GUI界面，利用Cursor抓取通訊錄並顯示在ListView上，程式碼如下所示：   package com.jashsample; import java.io.File; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; import java.util.Locale; import java.util.Random; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaRecorder; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.ContactsContract; import android.app.Activity; import android.app.AlertDialog; import android.app.SearchManager; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnKeyListener; import android.content.Intent; import android.content.IntentFilter; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Camera; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.Typeface; import android.hardware.Camera.Size; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.speech.RecognizerIntent; import android.speech.tts.TextToSpeech; import android.speech.tts.TextToSpeech.OnInitListener; import android.text.format.DateFormat; import android.text.method.KeyListener; import android.view.Display; import android.view.Gravity; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.Surface; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.ViewGroup; import android.view.WindowManager; import android.view.animation.AlphaAnimation; import android.view.animation.Animation; import android.view.animation.AnimationSet; import android.view.animation.RotateAnimation; import android.view.animation.ScaleAnimation; import android.view.animation.TranslateAnimation; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.EditText; import android.widget.GridView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.Spinner; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView; import android.widget.Toast; import android.widget.ViewFlipper; /*  * 建立ListView*1，利用Cursor抓取通訊錄並顯示在ListView上。  */ /*  *  */ public class MainActivity extends Activity { ListView lv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout ll = new LinearLayout(this); ll.setOrientation(LinearLayout.VERTICAL); setContentView(ll); lv = new ListView(this); Cursor cr = managedQuery(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); startManagingCursor(cr); ArrayAdapter<String> ad = new ArrayAdapter<String> (this, android.R.layout.simple_list_item_1); while(cr.moveToNext()) { int i = cr.getColumnIndex("DISPLAY_NAME"); String str = cr.getString(i); ad.add(str); } cr.close(); lv.setAdapter(ad); ll.addView(lv); } }