tab,seekbar,progress,grid,date_time,preferences/file

tab:

--------------------------------

public class TabTestActivity extends TabActivity implements TabHost.TabContentFactory{
 private ListView lv;
 protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   TabHost th=this.getTabHost();
   th.addTab(th.newTabSpec("中国人").setIndicator("中国歌曲").setContent(this));
   th.addTab(th.newTabSpec("外国人").setIndicator("外国歌曲").setContent(this));
   th.addTab(th.newTabSpec("周杰伦").setIndicator("流行歌曲").setContent(this));
 }

 public View createTabContent(String tag) {
  lv=new ListView(this);
  List<String> l=new ArrayList<String>();
  l.add(tag);
  if(tag.equals("中国人")){
   l.add("黄湖水");
   l.add("国歌");
  }else if(tag.equals("外国人")){
   l.add("heyho");
   l.add("my love");
  }else if(tag.equals("周杰伦")){
   l.add("断了的弦");
   l.add("黑色幽默");
  }
  ArrayAdapter a=new ArrayAdapter(this, android.R.layout.simple_list_item_checked,l);
  lv.setAdapter(a);
  return lv;
 }

}
--------------------------------------------------------------------------------

seekbar:

package com.yinhe;

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class SeekActivity extends Activity{
 private SeekBar seekbar;
 private TextView tv1,tv2;
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  this.setContentView(R.layout.seek);
  seekbar=(SeekBar)this.findViewById(R.id.seekbar);
  tv1=(TextView)this.findViewById(R.id.seek_tv1);
  tv2=(TextView)this.findViewById(R.id.seek_tv2);
  seekbar.setOnSeekBarChangeListener(l);
 }
 
 private OnSeekBarChangeListener l=new OnSeekBarChangeListener() {
  
  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   tv2.setText("停止调试");   
  }
  
  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
   tv2.setText("开始调试……");
  }
  
  @Override
  public void onProgressChanged(SeekBar seekBar, int progress,
    boolean fromUser) {
   tv1.setText("当前进度："+progress);
  }
 };
}
------------------------------------------------------------------------

progress:

package com.yinhe;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;

public class ProgressActivity extends Activity {
 private ProgressBar pb;
    private Button b1,b2;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        showView();
        setListener();
    }
   
    public void showView(){
     b1=(Button)this.findViewById(R.id.Button01);
     b2=(Button)this.findViewById(R.id.Button02);
     pb=(ProgressBar)this.findViewById(R.id.ProgressBar01);
    }
   
    public void setListener(){
     b1.setOnClickListener(l1);
     b2.setOnClickListener(l2);
    }
   
    private OnClickListener l1=new OnClickListener() {
  
  public void onClick(View v) {
   pb.incrementProgressBy(1);   
  }
 };
 
 private OnClickListener l2=new OnClickListener() {
  
  public void onClick(View v) {
   pb.incrementProgressBy(-1);   
  }
 };
}

--------------------------------------------------------------------

grid:

package com.yinhe;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

public class GridActivity extends Activity {
 //private GridView gv;
 private Gallery gv;
 private ImageView iv;
 protected void onCreate(Bundle savedInstanceState) {  
  super.onCreate(savedInstanceState);
  this.setContentView(R.layout.grid);
  showView();
 }
 
 public void showView(){
  gv=(Gallery)this.findViewById(R.id.grid_gv);
  //gv.setNumColumns(3);
  gv.setAdapter(new MyAdapter(this)); 
  gv.setOnItemClickListener(new OnItemClickListener() {

   @Override
   public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
     long arg3) {
    Toast.makeText(GridActivity.this, "您选择了第"+(arg2+1)+"号图片", Toast.LENGTH_SHORT).show();
    
   }
   
  });
 }
 
 class MyAdapter extends BaseAdapter{
  Integer[] imgs={
    R.drawable.img1,
    R.drawable.img2,
    R.drawable.img3,
    R.drawable.img4,
    R.drawable.img5,
    R.drawable.img6,
    R.drawable.img7,
    R.drawable.img8,
    R.drawable.img1
  };
  Context context;
  public MyAdapter(Context context){
   this.context=context;
  }
  @Override
  public int getCount() {
   return imgs.length;
  }

  @Override
  public Object getItem(int position) {
   return position;
  }

  @Override
  public long getItemId(int position) {
   return position;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   if(convertView==null){
    iv=new ImageView(context);
    //iv.setLayoutParams(new LayoutParams(100, 100));
    iv.setPadding(1, 20, 1, 20);
   }else{
    iv=(ImageView)convertView;
   }
   iv.setImageResource(imgs[position]);
   return iv;
  }
  
 }
}
-----------------------------------------------------------------------------

data_time:

package com.yinhe;

import java.util.Calendar;
import java.util.Locale;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;

public class DateActivity extends Activity {
 private TextView tv1,tv2;
 private Button b1,b2;
 private Calendar c;
 private int year,month,day,hour,minute;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  this.setContentView(R.layout.date);
  showView();
  setListener();
 }
 
 public void showView(){  
  b1=(Button)this.findViewById(R.id.b1);
  b2=(Button)this.findViewById(R.id.b2);
  c=Calendar.getInstance(Locale.CHINA);
  year=c.get(Calendar.YEAR);
  month=c.get(Calendar.MONTH);
  day=c.get(Calendar.DAY_OF_MONTH);
  hour=c.get(Calendar.HOUR);
  minute=c.get(Calendar.MINUTE);
  tv1=(TextView)this.findViewById(R.id.tv1);
  tv1.setText(year+":"+(month+1)+":"+day);
  tv2=(TextView)this.findViewById(R.id.tv2);
  tv2.setText(hour+":"+minute);
 }
 
 public void setListener(){
  b1.setOnClickListener(l1);
  b2.setOnClickListener(l2);
 }
 
 private OnClickListener l1=new OnClickListener() {
  
  public void onClick(View v) {
   // TODO Auto-generated method stub
   showDialog(0);
  }
 };
 
 private OnClickListener l2=new OnClickListener() {
  
  public void onClick(View v) {
   // TODO Auto-generated method stub
   showDialog(1);
  }
 };

 @Override
 protected Dialog onCreateDialog(int id) {
  if(id==0){
   return new DatePickerDialog(this, bl1, year, month, day);
  }else{
   return new TimePickerDialog(this, bl2, hour, minute, false);
  }
  
 }
 
 private OnDateSetListener bl1=new OnDateSetListener() {
  
  @Override
  public void onDateSet(DatePicker view, int year, int monthOfYear,
    int dayOfMonth) {
   year=year;
   month=monthOfYear+1;
   day=dayOfMonth;
   tv1.setText(year+":"+month+":"+day);   
  }
 };
 
 private OnTimeSetListener bl2=new OnTimeSetListener() {
  
  @Override
  public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
   hour=hourOfDay;
   minute=minute;
   tv2.setText(hour+":"+minute);   
  }
 };
 
}
---------------------------------------------------------------------------

preferences:

package com.yinhe;

import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.KeyEvent;
import android.widget.TextView;
import android.widget.Toast;

public class MusicActivity extends Activity {
 private TextView tv;
 private boolean flag=false;
 private DIMPlayer d=null;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  this.setContentView(R.layout.music);
  tv=(TextView)this.findViewById(R.id.music_tv);
  d=new DIMPlayer(this);
  SharedPreferences sp=this.getSharedPreferences("music",MODE_PRIVATE);
  flag=sp.getBoolean("flag", false);
  if(flag){
   tv.setText("当前播放状态：开");
   d.startPlay();
  }else{
   tv.setText("当前播放状态：关");
  }
 }

 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  if(keyCode==event.KEYCODE_HOME){
   SharedPreferences sp=this.getSharedPreferences("music",MODE_PRIVATE);
   Editor editor=sp.edit();
   editor.putBoolean("flag", flag);
   editor.commit();
   d.pausePlay();
   d.finishPlay();
   this.finish();
  }
  return true;
 }

 @Override
 public boolean onKeyUp(int keyCode, KeyEvent event) {
  switch(keyCode){
   case 19:
    if(flag){
     Toast.makeText(this, "已经是播放状态", Toast.LENGTH_SHORT).show();
    }else{
     flag=true;
     tv.setText("当前播放状态：开");
     d.startPlay();
    }
    break;
   case 20:
    if(!flag){
     Toast.makeText(this, "已经是关闭状态", Toast.LENGTH_SHORT).show();
    }else{
     flag=false;
     tv.setText("当前播放状态：关");
     d.pausePlay();
    }
    break;
  }
  return true;
 }
 
}

 

package com.yinhe;

import java.io.IOException;

import android.content.Context;
import android.media.MediaPlayer;

public class DIMPlayer {
 private MediaPlayer mPlayer;
 private Context context;
 public DIMPlayer(Context context){
  this.context=context;
  mPlayer=MediaPlayer.create(context,R.raw.a);
 }
 public void startPlay(){
  try {
   mPlayer.prepare();
  } catch (IllegalStateException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  mPlayer.start();
 }
 public void pausePlay(){
  mPlayer.pause();
 }
 public void finishPlay(){
  mPlayer.stop();
  mPlayer.release();
 }
}
--------------------------------------------------------------------

file:

package com.yinhe;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.KeyEvent;
import android.widget.TextView;
import android.widget.Toast;

public class FileMusicActivity extends Activity {
 private TextView tv;
 private boolean flag=false;
 private DIMPlayer d=null;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  this.setContentView(R.layout.music);
  tv=(TextView)this.findViewById(R.id.music_tv);
  d=new DIMPlayer(this);
  load();  
  if(flag){
   tv.setText("当前播放状态：开");
   d.startPlay();
  }else{
   tv.setText("当前播放状态：关");
  }
 }

 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  if(keyCode==event.KEYCODE_BACK){
   save();
   d.pausePlay();
   d.finishPlay();
   this.finish();
  }
  return true;
 }

 @Override
 public boolean onKeyUp(int keyCode, KeyEvent event) {
  switch(keyCode){
   case 19:
    if(flag){
     Toast.makeText(this, "已经是播放状态", Toast.LENGTH_SHORT).show();
    }else{
     flag=true;
     tv.setText("当前播放状态：开");
     d.startPlay();
    }
    break;
   case 20:
    if(!flag){
     Toast.makeText(this, "已经是关闭状态", Toast.LENGTH_SHORT).show();
    }else{
     flag=false;
     tv.setText("当前播放状态：关");
     d.pausePlay();
    }
    break;
  }
  return true;
 }
 
 public void load(){
  Properties pros=new Properties();
  try {
   FileInputStream fis=this.openFileInput("music.properties");
   pros.load(fis);
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  if(pros.get("music")!=null){
   flag=Boolean.valueOf(pros.get("music").toString());
  }
  
 }
 
 public void save(){
  Properties pros=new Properties();
  pros.put("music", String.valueOf(flag));
  try {
   FileOutputStream fos=this.openFileOutput("music.properties", Context.MODE_WORLD_WRITEABLE);
   pros.store(fos, "");
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
 
}

 

package com.yinhe;

import java.io.IOException;

import android.content.Context;
import android.media.MediaPlayer;

public class DIMPlayer {
 private MediaPlayer mPlayer;
 private Context context;
 public DIMPlayer(Context context){
  this.context=context;
  mPlayer=MediaPlayer.create(context,R.raw.a);
 }
 public void startPlay(){
  try {
   mPlayer.prepare();
  } catch (IllegalStateException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  mPlayer.start();
 }
 public void pausePlay(){
  mPlayer.pause();
 }
 public void finishPlay(){
  mPlayer.stop();
  mPlayer.release();
 }
}