Android应用开发笔记 - 项目代码1
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 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 drawprivate 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; }}