Android实例-调用系统APP(XE10+小米2)

相关资料：
1.群号383675978
2.http://blog.sina.com.cn/s/blog_44fa172f0101rmjt.html
3.PS:ListView1.ItemAppearanceObjects.ItemObjects.Text.Font.Size:=20; 设置字体大小，属性面板也可以设置。代码设置时需要看一下手机支持的大小是多少。
实例源码：
  1 unit Unit1;
  2 
  3 interface
  4 
  5 uses
  6   System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  7   FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
  8   FMX.Controls.Presentation, FMX.Edit,
  9   Androidapi.JNI.JavaTypes,//JString使用
 10   Androidapi.JNI.GraphicsContentViewText,//JIntent使用
 11   FMX.Surfaces,//TBitmapSurface使用
 12   Androidapi.Helpers,//SharedActivity使用
 13   System.IOUtils,//TPath使用
 14   Androidapi.JNIBridge,//ILocalObject使用
 15   FMX.Helpers.Android,//JBitmapToSurface使用
 16   System.Generics.Collections,//TList使用
 17   FMX.ListView.Types, FMX.ListView.Appearances,
 18   FMX.ListView.Adapters.Base, FMX.ListView, FMX.StdCtrls, FMX.ScrollBox,
 19   FMX.Memo;
 20 
 21 type
 22   TForm1 = class(TForm)
 23     Edit1: TEdit;
 24     ListView1: TListView;
 25     Button1: TButton;
 26     Memo1: TMemo;
 27     procedure Edit1Change(Sender: TObject);
 28     procedure Edit1Typing(Sender: TObject);
 29     procedure Button1Click(Sender: TObject);
 30     procedure FormCreate(Sender: TObject);
 31     procedure ListView1ItemClick(const Sender: TObject;
 32       const AItem: TListViewItem);
 33   private
 34     { Private declarations }
 35     MainList : TList<JActivityInfo>;
 36     dictAppIcons : TDictionary<Integer, TBitmap>;
 37     //过虑方法
 38     procedure FilterListView(AListView: TListView; AFilterName: string);
 39     //打开APP方法
 40     procedure OpenApp(PackageName, AppName : JString);
 41     //获取安装的APP
 42     function GetActivityAppList: JList;
 43     function GetOrSetCashAppIcon(appInfo: JApplicationInfo): TBitmap;
 44     procedure LoadActivityInfoList(var List: TList<JActivityInfo>);
 45     procedure LoadDictonaryAppIcons(index: Integer; appInfo: JApplicationInfo;
 46       var dictonaryAppIcons: TDictionary<Integer, TBitmap>);
 47     procedure LoadListView(listView: TListView; AppList: TList<JActivityInfo>;
 48       dictonaryAppIcons: TDictionary<Integer, TBitmap>);
 49     procedure LoadListViewBitmap(listView: TListView; AppList: TList<JActivityInfo>;
 50       var dictonaryAppIcons: TDictionary<Integer, TBitmap>);
 51   public
 52     { Public declarations }
 53   end;
 54 
 55 const
 56     DEFAUT_INDEX: Integer = -1;
 57 
 58 var
 59   Form1: TForm1;
 60 
 61 implementation
 62 
 63 {$R *.fmx}
 64 {$R *.NmXhdpiPh.fmx ANDROID}
 65 
 66 { TForm1 }
 67 //调用打开APP
 68 procedure TForm1.Button1Click(Sender: TObject);
 69 begin
 70   OpenApp(StringToJString('com.androidillusion.videocamillusionpro'),
 71     StringToJString('com.androidillusion.videocamillusionpro.VideoillusionActivity'));
 72 end;
 73 
 74 //改变事件
 75 procedure TForm1.Edit1Change(Sender: TObject);
 76 begin
 77   if Edit1.Text = '' then
 78    FilterListView(Self.ListView1, Edit1.Text.Trim);
 79 end;
 80 
 81 //输入事件
 82 procedure TForm1.Edit1Typing(Sender: TObject);
 83 begin
 84   FilterListView(Self.ListView1, Edit1.Text.Trim);
 85 end;
 86 
 87 //过虑方法
 88 procedure TForm1.FilterListView(AListView: TListView; AFilterName: string);
 89 var
 90   i: integer;
 91   item: TListViewItem;
 92   lower: string;
 93 begin
 94   if not Assigned(AListView) then
 95     Exit;
 96   lower := AFilterName.ToLower.Trim;
 97   if lower.IsEmpty then
 98   begin
 99     if Assigned(AListView.Items.Filter) then
100       AListView.Items.Filter := nil;
101   end
102   else
103   begin
104     AListView.ItemIndex := DEFAUT_INDEX;
105     AListView.Items.Filter :=
106     function(sFilter: string): Boolean
107     begin
108       Result := (lower.IsEmpty) or sFilter.ToLower.Contains(lower);
109     end;
110   end;
111 end;
112 
113 procedure TForm1.FormCreate(Sender: TObject);
114 begin
115   LoadActivityInfoList(MainList);
116   LoadListView(Self.ListView1, MainList, self.dictAppIcons);
117   LoadListViewBitmap(Self.ListView1, MainList, self.dictAppIcons);
118 end;
119 
120 //获取安装的APP
121 function TForm1.GetActivityAppList: JList;
122 var
123   tempList: JList;
124   Intent: JIntent;
125   Manager: JPackageManager;
126 begin
127   Intent := TJIntent.Create;
128   Intent.SetAction(TJIntent.JavaClass.ACTION_MAIN);
129   Intent.AddCategory(TJIntent.JavaClass.CATEGORY_LAUNCHER);
130   Manager := SharedActivity.GetPackageManager;
131   tempList := nil;
132   tempList := Manager.QueryIntentActivities(Intent, 0);
133   Result := tempList;
134 end;
135 
136 function TForm1.GetOrSetCashAppIcon(appInfo: JApplicationInfo): TBitmap;
137 var
138   Drawable: JDrawable;
139   Bitmap: JBitmap;
140   itemBitmap: TBitmap;
141   Surface: TBitmapSurface;
142   saveDir: string;
143   pngFileName: string;
144   SaveParams: TBitmapCodecSaveParams;
145 begin
146   if not Assigned(appInfo) then
147   begin
148     Result := itemBitmap;
149     Exit;
150   end;
151 
152   saveDir := TPath.GetCachePath;
153   pngFileName := saveDir + '/' + JStringToString(appInfo.packageName) + '.png';
154   itemBitmap := TBitmap.Create;
155   if not TDirectory.Exists(saveDir, False) then
156     TDirectory.CreateDirectory(saveDir);
157   if TFile.Exists(pngFileName) then
158     itemBitmap.LoadFromFile(pngFileName)
159   else
160   begin
161     Drawable := appInfo.loadIcon(SharedActivity.getPackageManager);
162     Bitmap := TJBitmapDrawable.Wrap((Drawable as ILocalObject).GetObjectID).getBitmap;
163     Surface := TBitmapSurface.Create;
164     try
165       if JBitmapToSurface(Bitmap, Surface) then
166       begin
167         itemBitmap.Assign(Surface);
168         SaveParams.Quality := 100;
169         itemBitmap.SaveToFile(pngFileName, @SaveParams);
170       end;
171     finally
172       Surface.Free;
173     end;
174   end;
175   Result := itemBitmap;
176 end;
177 
178 procedure TForm1.ListView1ItemClick(const Sender: TObject;
179   const AItem: TListViewItem);
180 begin
181   if not Assigned(MainList) then
182     Exit;
183   OpenApp(MainList.Items[AItem.Tag].applicationInfo.packageName,
184     MainList.Items[AItem.Tag].name);
185   Memo1.Lines.Add(JStringToString(MainList.Items[AItem.Tag].applicationInfo.packageName) + '/' + JStringToString(MainList.Items[AItem.Tag].name));
186 end;
187 
188 procedure TForm1.LoadActivityInfoList(var List: TList<JActivityInfo>);
189 var
190   tempList: JList;
191   i: Integer;
192   ResolveInfo: JResolveInfo;
193   Info: JActivityInfo;
194   AppInfo: JApplicationInfo;
195 begin
196   if not Assigned(List) then
197     List := TList<JActivityInfo>.Create;
198   List.Clear;
199   tempList := Self.GetActivityAppList;
200   for i := 0 to tempList.size - 1 do
201   begin
202     ResolveInfo := TJResolveInfo.Wrap((tempList.get(i) as ILocalObject).GetObjectID);
203     Info := TJActivityInfo.Wrap((ResolveInfo.activityInfo as ILocalObject).GetObjectID);
204     AppInfo := TJApplicationInfo.Wrap((Info.applicationInfo as ILocalObject).GetObjectID);
205     List.Add(Info);
206   end;
207 end;
208 
209 procedure TForm1.LoadDictonaryAppIcons(index: Integer;
210   appInfo: JApplicationInfo;
211   var dictonaryAppIcons: TDictionary<Integer, TBitmap>);
212 var
213   itemBitmap : TBitmap;
214 begin
215   if not Assigned(dictonaryAppIcons) then
216     dictonaryAppIcons := TDictionary<Integer, TBitmap>.Create;
217   if not dictonaryAppIcons.ContainsKey(index) then
218   begin
219     itemBitmap := GetOrSetCashAppIcon(appInfo);
220     dictonaryAppIcons.AddOrSetValue(index, itemBitmap);
221   end;
222 end;
223 
224 procedure TForm1.LoadListView(listView: TListView;
225   AppList: TList<JActivityInfo>;
226   dictonaryAppIcons: TDictionary<Integer, TBitmap>);
227 var
228   tempItem : TListViewItem;
229   tempString, tempSubString, tempSubString2 : string;
230   i : integer;
231 begin
232   if (not Assigned(listView)) or (not Assigned(AppList)) then
233     Exit;
234   listView.Items.Clear;
235   listView.BeginUpdate;
236   for I := 0 to AppList.Count - 1 do
237   begin
238     tempString := JStringToString(AppList.Items[i].applicationInfo.loadLabel(SharedActivity.getPackageManager).toString);
239     tempItem := listView.Items.Add;
240     tempItem.Text := tempString;
241     tempItem.Tag := i;
242   end;
243   listView.EndUpdate;
244 end;
245 
246 procedure TForm1.LoadListViewBitmap(listView: TListView;
247   AppList: TList<JActivityInfo>;
248   var dictonaryAppIcons: TDictionary<Integer, TBitmap>);
249 var
250   i: integer;
251 begin
252   if (not Assigned(listView)) or (not Assigned(AppList)) then
253     Exit;
254   listView.BeginUpdate;
255   for I := 0 to listView.ItemCount - 1 do
256   begin
257     listView.Items[i].BeginUpdate;
258     LoadDictonaryAppIcons(i, AppList.Items[listView.Items[i].Tag].applicationInfo, dictonaryAppIcons);
259     if Assigned(dictonaryAppIcons) and (dictonaryAppIcons.ContainsKey(i)) then
260         listView.Items[i].Bitmap := dictonaryAppIcons.Items[i];
261     listView.Items[i].EndUpdate;
262     Application.ProcessMessages;
263   end;
264   listView.EndUpdate;
265 end;
266 
267 //打开APP方法
268 procedure TForm1.OpenApp(PackageName, AppName: JString);
269 var
270   Intent : JIntent;
271   NativeComponent : JComponentName;
272 begin
273   Intent := TJIntent.Create;
274   Intent.setAction(TJIntent.JavaClass.ACTION_MAIN);
275   Intent.addCategory(TJIntent.JavaClass.CATEGORY_LAUNCHER);
276   NativeComponent := TJComponentName.JavaClass.init(PackageName, AppName);
277   Intent.addFlags(TJIntent.JavaClass.FLAG_ACTIVITY_NEW_TASK or TJIntent.JavaClass.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
278   Intent.setComponent(NativeComponent);
279   SharedActivity.startActivity(Intent);
280 end;
281 
282 end.