获取手机安装的全部应用的示例教程
android用sharepreference保存输入框中的内容
http://www.eoeandroid.com/thread-199222-1-1.html
Android之ScrollView嵌套ListView
http://www.eoeandroid.com/thread-198859-1-1.html
android根据View的不同状态更换不同的背景
http://www.eoeandroid.com/thread-198029-1-1.html
package com.isoftstone.apk_demo; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class APK_DemoActivity extends Activity implements android.view.View.OnClickListener{ /** Called when the activity is first created. */ public Intent mIntent; static ProgressDialog pd; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button=(Button)findViewById(R.id.button1); button.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent=new Intent(this,main.class); Dialog(); startActivity(intent); } public void Dialog(){ pd = new ProgressDialog(APK_DemoActivity.this); pd.setMessage("亲! 正在扫描中哦...."); pd.show(); } }
package com.isoftstone.apk_demo; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.Button; import android.widget.ListView; import android.widget.TextView; public class main extends Activity implements android.view.View.OnClickListener{ /** Called when the activity is first created. */ public Intent mIntent; private ProgressDialog pd; int i=0; public List<ResolveInfo> installApps = null;// 本机已经安装程序列表 private ListView lv_content;// 内容显示区域 public static final int installWhat = 1;// 安装程序列表
public static final int appPermissionWhat = 5;// 某个程序的权限页面处理 Context context; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main0);
Button button=(Button)findViewById(R.id.button1); button.setOnClickListener(this); try { handleInstall(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * 处理本机安装程序 * * @throws Exception */ private void handleInstall() throws Exception { // 1.设置操作按钮可见(扫描已安装程序) // 3.得到本机安装应用程序 if (installApps == null) { mIntent = new Intent(Intent.ACTION_MAIN, null); mIntent.addCategory(Intent.CATEGORY_LAUNCHER); installApps = getPackageManager().queryIntentActivities(mIntent, 0); } List<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();// 将本机安装程序收集 for (ResolveInfo info : installApps) { HashMap<String, Object> map = new HashMap<String, Object>(); map.put("name", info.loadLabel(this.getPackageManager()).toString()); map.put("packageName", info.activityInfo.packageName); map.put("img", info.loadIcon(this.getPackageManager())); list.add(map); } setTitle("共安装" + installApps.size() + "个程序");// 设置标题 // 3.将程序显示到页面上 lv_content = (ListView) this.findViewById(R.id.listView1); SearchAdapter adapter = new SearchAdapter(this, list, R.layout.list_content_main, new String[] { "name", "packageName", "img" }, new int[] { R.id.activityInfo_name, R.id.activityInfo_packageName, R.id.activityInfo_img });// 自定义适配器 lv_content.setAdapter(adapter); } @Override public void onClick(View v) { // TODO Auto-generated method stub finish(); APK_DemoActivity.pd.cancel(); } }
package com.isoftstone.apk_demo; import java.util.HashMap; import java.util.List; import java.util.Map; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.PixelFormat; import android.graphics.drawable.Drawable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.CheckBox; import android.widget.Checkable; import android.widget.ImageView; import android.widget.SimpleAdapter; import android.widget.TextView; /** * 自定义Adapter * * @author machao * @mail zeusmc.163.com * */ public class SearchAdapter extends SimpleAdapter { private Map<Integer, View> viewMap = new HashMap<Integer, View>(); private int[] mTo; private String[] mFrom; private ViewBinder mViewBinder; private List<? extends Map<String, ?>> mData; private int mResource; private LayoutInflater mInflater; public SearchAdapter(Context context, List<? extends Map<String, ?>> data,int resource, String[] from, int[] to) { super(context, data, resource, from, to); mData = data; mResource = resource; mFrom = from; mTo = to; mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public View getView(int position, View convertView, ViewGroup parent) { return createViewFromResource(position, convertView, parent, mResource); } private View createViewFromResource(int position, View convertView,ViewGroup parent, int resource) { View rowView = this.viewMap.get(position); if (rowView == null) { rowView = mInflater.inflate(resource, null); final int[] to = mTo; final int count = to.length; final View[] holder = new View[count]; for (int i = 0; i < count; i++) { holder[i] = rowView.findViewById(to[i]); } rowView.setTag(holder); bindView(position, rowView); viewMap.put(position, rowView); } return rowView; } @SuppressWarnings("unchecked") private void bindView(int position, View view) { final Map dataSet = mData.get(position); if (dataSet == null) { return; } final ViewBinder binder = mViewBinder; final View[] holder = (View[]) view.getTag(); final String[] from = mFrom; final int[] to = mTo; final int count = to.length; for (int i = 0; i < count; i++) { final View v = holder[i]; if (v != null) { final Object data = dataSet.get(from[i]); String urlText = null; if (data == null) { urlText = ""; } else { urlText = data.toString(); } boolean bound = false; if (binder != null) { bound = binder.setViewValue(v, data, urlText); } if (!bound) { if (v instanceof CheckBox) { ((CheckBox) v).setText(data.toString()); } else if (v instanceof Checkable) { if (data instanceof Boolean) { ((Checkable) v).setChecked((Boolean) data); } else { throw new IllegalStateException(v.getClass() .getName() + " should be bound to a Boolean, not a " + data.getClass()); } } else if (v instanceof TextView) { setViewText((TextView) v, urlText); } else if (v instanceof CheckBox) { } else if (v instanceof ImageView) { if (data instanceof Integer) { setViewImage((ImageView) v, (Integer) data); } if (data instanceof Drawable) { setViewImage((ImageView) v, (Drawable) data); } else { if (urlText != null && data != null) { setViewImage((ImageView) v, urlText); } else { TextView tv = ((TextView) view .findViewById(R.id.activityInfo_name)); tv.setTextColor(Color.RED); tv.setTextSize(18); view.setClickable(false); view.setFocusable(false); view.setFocusableInTouchMode(false); } } } else { throw new IllegalStateException( v.getClass().getName() + " is not a " + " view that can be bounds by this SimpleAdapter"); } } } } } public void setViewImage(ImageView v, int value) { v.setImageResource(value); } public void setViewImage(final ImageView v, Drawable drawable) { Bitmap bitmap = Bitmap .createBitmap( drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable .getIntrinsicHeight()); drawable.draw(canvas); ((ImageView) v).setImageBitmap(bitmap); } }
效果图：
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