1.1 Widget类
所有的源代码都位于com.example.prjandroid包下：
FullImageActivity.java:
package com.example.prjandroid;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.widget.ImageView;public class FullImageActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.full_img1); Intent intent = getIntent(); int position = intent.getExtras().getInt("id"); ImageAdapter imgAdapter = new ImageAdapter(FullImageActivity.this); ImageView imgView = (ImageView) findViewById(R.id.imgView1); imgView.setImageResource(imgAdapter.mThumbIds[position]); }}ImageAdapter.java:
package com.example.prjandroid;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;public class ImageAdapter extends BaseAdapter { private Context mContext; public Integer[] mThumbIds = { R.drawable.emacs1, R.drawable.emacs2, R.drawable.emacs3, R.drawable.emacs4, R.drawable.emacs5, R.drawable.emacs6, R.drawable.emacs7, R.drawable.emacs8, R.drawable.emacs9, R.drawable.emacs10, R.drawable.emacs11, R.drawable.emacs12, R.drawable.emacs13, R.drawable.emacs14, R.drawable.emacs15 }; public ImageAdapter(Context context) { // TODO Auto-generated constructor stub mContext = context; } @Override public int getCount() { // TODO Auto-generated method stub return mThumbIds.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View converView, ViewGroup parent) { // TODO Auto-generated method stub ImageView imgView = new ImageView(mContext); imgView.setImageResource(mThumbIds[position]); imgView.setScaleType(ImageView.ScaleType.CENTER_CROP); imgView.setLayoutParams(new GridView.LayoutParams(70, 70)); return imgView; }}ImgAdapter.java:package com.example.prjandroid;import android.content.Context;import android.content.res.TypedArray;import android.view.View;import android.view.ViewGroup;import android.view.ViewGroup.LayoutParams;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.GridView;import android.widget.ImageView;public class ImgAdapter extends BaseAdapter { // resource draw private int[] resPics = new int[] { R.drawable.emacs1, R.drawable.emacs2, R.drawable.emacs3, R.drawable.emacs4, R.drawable.emacs5, R.drawable.emacs6, R.drawable.emacs7, R.drawable.emacs8, R.drawable.emacs9, R.drawable.emacs10 }; private Context m_context; private int m_galleryItemBackGround; public ImgAdapter(Context context) { // TODO Auto-generated constructor stub m_context = context; TypedArray typeArray = m_context.obtainStyledAttributes(R.styleable.galleryThem); m_galleryItemBackGround = typeArray.getResourceId( R.styleable.galleryThem_android_galleryItemBackground, 0); } @Override public int getCount() { // TODO Auto-generated method stub return resPics.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ImageView imgView = new ImageView(m_context); imgView.setImageResource(resPics[position]); imgView.setScaleType(ImageView.ScaleType.FIT_XY); imgView.setLayoutParams(new Gallery.LayoutParams(163, 106)); imgView.setBackgroundResource(m_galleryItemBackGround); return imgView; }}MainActivity.javapackage com.example.prjandroid;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Gravity;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.Gallery;import android.widget.GridView;import android.widget.ImageButton;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.ListView;import android.widget.MultiAutoCompleteTextView;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.RadioGroup.OnCheckedChangeListener;import android.widget.SimpleAdapter;import android.widget.Spinner;import android.widget.Toast;import android.widget.ViewSwitcher.ViewFactory;public class MainActivity extends Activity implements OnClickListener, OnCheckedChangeListener/* RadioButton */, OnItemSelectedListener/* Spinner */, android.widget.CompoundButton.OnCheckedChangeListener/* CheckBox */,ViewFactory/* ImageSwitcher */,OnItemClickListener/* GridView */ { RadioButton m_radioBtn1, m_radioBtn2; CheckBox m_chkBox1, m_chkBox2; String m_str = "You Choice: "; ArrayAdapter<CharSequence> m_adapterView; Spinner m_spinner; View m_view1, m_view2, m_view3, m_view4, m_viewList, m_viewArray, m_viewBase; Boolean m_flag_view = false; Boolean m_flag_view2 = false; Boolean m_flag_view3 = false; Boolean m_flag_viewList = false; Boolean m_flag_viewArray = false; Boolean m_flag_viewBase = false; // resource draw private int[] resPics = new int[] { R.drawable.emacs1, R.drawable.emacs2, R.drawable.emacs3, R.drawable.emacs4, R.drawable.emacs5, R.drawable.emacs6, R.drawable.emacs7, R.drawable.emacs8, R.drawable.emacs9, R.drawable.emacs10 }; private int index = 0; ImageSwitcher m_imgSwticher; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // LayoutInflater inflater = getLayoutInflater(); LayoutInflater inflater = LayoutInflater.from(this); // setContentView(R.layout.activity_main); m_view1 = inflater.inflate(R.layout.activity_main, null); m_view2 = inflater.inflate(R.layout.view_gallery, null); m_view3 = inflater.inflate(R.layout.view_image_switcher, null); m_view4 = inflater.inflate(R.layout.gridview02, null); m_viewList = inflater.inflate(R.layout.list_view, null); m_viewArray = inflater.inflate(R.layout.view_arrayadapter, null); m_viewBase = inflater.inflate(R.layout.view_base, null); setView(m_view1); Button btnOk = (Button) findViewById(R.id.btnOk); btnOk.setOnClickListener(this); // ImageButton ImageButton imgBtn1 = (ImageButton) findViewById(R.id.imgBtn1); imgBtn1.setOnClickListener(this); // Button 2 Button btnGo = (Button) findViewById(R.id.btnGrid); btnGo.setOnClickListener(this); // ListView Button btnListView = (Button) findViewById(R.id.btnListView); btnListView.setOnClickListener(this); // AutoComplete Button btnViewArrayAdapter = (Button) findViewById(R.id.btnArrayAdapter); btnViewArrayAdapter.setOnClickListener(this); // Base View Button btnBaseView = (Button) findViewById(R.id.btnBaseView); btnBaseView.setOnClickListener(this); } //Button @Override public void onClick(View v) { switch (v.getId()) { case (R.id.btnOk): setView(m_view2); if (!m_flag_view) { // view_gallery is button Button btnReturn = (Button) findViewById(R.id.btnReturn); btnReturn.setOnClickListener(this); // // Gallery Gallery gallery = (Gallery) findViewById(R.id.gallery02); ImgAdapter imgAdapter = new ImgAdapter(MainActivity.this); gallery.setAdapter(imgAdapter); m_flag_view = true; } break; case (R.id.btnReturn): setView(m_view1); break; case (R.id.button1): setView(m_view1); break; case (R.id.imgBtn1): setView(m_view3); if (!m_flag_view2) { Button btnReturn2 = (Button) findViewById(R.id.button1); btnReturn2.setOnClickListener(this); Button btnPrev = (Button) findViewById(R.id.btnPrev); btnPrev.setOnClickListener(this); Button btnNext = (Button) findViewById(R.id.btnNext); btnNext.setOnClickListener(this); m_imgSwticher = (ImageSwitcher) findViewById(R.id.imgSwit01); m_imgSwticher.setFactory(this); m_flag_view2 = true; } break; case (R.id.btnPrev): index--; setPicture(index); break; case (R.id.btnNext): index++; setPicture(index); break; case (R.id.btnGrid): setView(m_view4); if (!m_flag_view3) { GridView gv = (GridView) findViewById(R.id.grid_view); gv.setAdapter(new ImageAdapter(MainActivity.this)); gv.setOnItemClickListener(this); m_flag_view3 = true; } break; case (R.id.btnListView): setView(m_viewList); if (!m_flag_viewList) { ListView listView = (ListView) findViewById(R.id.listView01); List<Map<String, Object>> data = getSampleData(); SimpleAdapter sAdapter = new SimpleAdapter( MainActivity.this, data, R.layout.list_row, new String[] { "imgIcon", "title01", "desText" }, new int[] { R.id.imgIcon, R.id.title01, R.id.desText } ); listView.setAdapter(sAdapter); m_flag_viewList = true; } break; case (R.id.btnArrayAdapter): setView(m_viewArray); if (!m_flag_viewArray) { AutoCompleteTextView aCompTextView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1); MultiAutoCompleteTextView mCompTextView = (MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView1); ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>( MainActivity.this, android.R.layout.simple_dropdown_item_1line, new String[] { "ab", "abc", "abcd", "abcde", "abcdef", "edcba", "dcba", "cba", "ba", "bcd" }); aCompTextView.setAdapter(arrayAdapter); mCompTextView.setAdapter(arrayAdapter); mCompTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer()); m_flag_viewArray = true; } break; case (R.id.btnBaseView): setView(m_viewBase); if (!m_flag_viewBase) { // Spinner m_adapterView = ArrayAdapter.createFromResource( MainActivity.this, R.array.bloods, android.R.layout.simple_spinner_dropdown_item); m_adapterView.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item); m_spinner = (Spinner) findViewById(R.id.spin01); m_spinner.setAdapter(m_adapterView); m_spinner.setOnItemSelectedListener(MainActivity.this); // CheckBox m_chkBox1 = (CheckBox) findViewById(R.id.chkBox1); m_chkBox2 = (CheckBox) findViewById(R.id.chkBox2); m_chkBox1.setOnCheckedChangeListener(MainActivity.this); m_chkBox2.setOnCheckedChangeListener(MainActivity.this); // Radio RadioGroup radioGrou1 = (RadioGroup) findViewById(R.id.radioGroup01); m_radioBtn1 = (RadioButton) findViewById(R.id.radioBtn1); m_radioBtn2 = (RadioButton) findViewById(R.id.radioBtn2); radioGrou1.setOnCheckedChangeListener(MainActivity.this); m_flag_viewBase = true; } break; default: break; } } // RadioButton @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if (checkedId == m_radioBtn1.getId()) { setToastString("Male").show(); } else { setToastString("Female").show(); } } // CheckBox @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO Auto-generated method stub switch (buttonView.getId()) { case (R.id.chkBox1): if (m_chkBox1.isChecked()) { m_str += m_chkBox1.getText() + " "; setToastString(m_str).show(); } break; case (R.id.chkBox2): if (m_chkBox2.isChecked()) { m_str += m_chkBox2.getText() + " "; setToastString(m_str).show(); } break; default: break; } } // Spinner-1 @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub setToastString( // this.getResources().getStringArray(R.array.bloods)[arg2] m_spinner.getSelectedItem().toString() ).show(); arg0.setVisibility(arg1.VISIBLE); } // Spinner-2 @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { // TODO Auto-generated method stub Intent intent = new Intent(getApplicationContext(), FullImageActivity.class); intent.putExtra("id", position); startActivity(intent); } @Override public View makeView() { // TODO Auto-generated method stub ImageView imgView = new ImageView(this); imgView.setScaleType(ImageView.ScaleType.FIT_CENTER); return imgView; } private List<Map<String, Object>> getSampleData() { List<Map<String, Object>> result = new ArrayList<Map<String,Object>>(); for (int i = 0; i < 10; i++) { Map<String, Object> map = new HashMap<String, Object>(); map.put("imgIcon", R.drawable.ic_launcher); map.put("title01", "image0" + i); map.put("desText", "This is image 0" + i); result.add(map); } return result; } /** * * @param str * @return */ private Toast setToastString (String str) { Toast toast = Toast.makeText(this, str, Toast.LENGTH_LONG); toast.setGravity(Gravity.BOTTOM, 0, 0); return toast; } /** * * @param v */ private void setView(View v) { setContentView(v); } /** * * @param iIndex */ private void setPicture(int iIndex) { if (iIndex < 0) { iIndex = resPics.length - 1; } if (iIndex >= resPics.length) { iIndex = 0; } m_imgSwticher.setImageResource(resPics[iIndex]); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; }}---------------xiaobin-author--