PackageManager()的使用列举相关的事件

PackageManager()的使用列举相关的事件
文章分类:移动开发

看来这个东西应该专门开一个帖子了，发现这个包里面的东西太多，以前写的很零碎不容易找

查询系统使用的Content Providers
Java代码

   1. for (PackageInfo pack : getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS)) {  
   2.         ProviderInfo[] providers = pack.providers;  
   3.         if (providers != null) {  
   4.             for (ProviderInfo provider : providers) {  
   5.                 Log.d("Example", "provider: " + provider.authority);  
   6.             }  
   7.         }  
   8.     }  

Java代码

   1. for (PackageInfo pack : getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS)) {  
   2.         ProviderInfo[] providers = pack.providers;  
   3.         if (providers != null) {  
   4.             for (ProviderInfo provider : providers) {  
   5.                 Log.d("Example", "provider: " + provider.authority);  
   6.             }  
   7.         }  
   8.     }  

for (PackageInfo pack : getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS)) {
        ProviderInfo[] providers = pack.providers;
        if (providers != null) {
            for (ProviderInfo provider : providers) {
                Log.d("Example", "provider: " + provider.authority);
            }
        }
    }


Java代码

   1. class PInfo {    
   2.     private String appname = "";    
   3.     private String pname = "";    
   4.     private String versionName = "";    
   5.     private int versionCode = 0;    
   6.     private Drawable icon;    
   7.     private void prettyPrint() {    
   8.         log(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode + "\t");    
   9.     }    
  10. }    
  11.    
  12. private void listPackages() {    
  13.     ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */   
  14.     final int max = apps.size();    
  15.     for (int i=0; i<max; i++) {    
  16.         apps.get(i).prettyPrint();    
  17.     }    
  18. }    
  19.    
  20. private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {    
  21.     ArrayList<PInfo> res = new ArrayList<PInfo>();            
  22.     List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);    
  23.     for(int i=0;i<packs.size();i++) {    
  24.         PackageInfo p = packs.get(i);    
  25.         if ((!getSysPackages) && (p.versionName == null)) {    
  26.             continue ;    
  27.         }    
  28.         PInfo newInfo = new PInfo();    
  29.         newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();    
  30.         newInfo.pname = p.packageName;    
  31.         newInfo.versionName = p.versionName;    
  32.         newInfo.versionCode = p.versionCode;    
  33.         newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());    
  34.         res.add(newInfo);    
  35.     }    
  36.     return res;     
  37. }   

Java代码

   1. class PInfo {    
   2.     private String appname = "";    
   3.     private String pname = "";    
   4.     private String versionName = "";    
   5.     private int versionCode = 0;    
   6.     private Drawable icon;    
   7.     private void prettyPrint() {    
   8.         log(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode + "\t");    
   9.     }    
  10. }    
  11.    
  12. private void listPackages() {    
  13.     ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */   
  14.     final int max = apps.size();    
  15.     for (int i=0; i<max; i++) {    
  16.         apps.get(i).prettyPrint();    
  17.     }    
  18. }    
  19.    
  20. private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {    
  21.     ArrayList<PInfo> res = new ArrayList<PInfo>();            
  22.     List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);    
  23.     for(int i=0;i<packs.size();i++) {    
  24.         PackageInfo p = packs.get(i);    
  25.         if ((!getSysPackages) && (p.versionName == null)) {    
  26.             continue ;    
  27.         }    
  28.         PInfo newInfo = new PInfo();    
  29.         newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();    
  30.         newInfo.pname = p.packageName;    
  31.         newInfo.versionName = p.versionName;    
  32.         newInfo.versionCode = p.versionCode;    
  33.         newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());    
  34.         res.add(newInfo);    
  35.     }    
  36.     return res;     
  37. }   

class PInfo {  
    private String appname = "";  
    private String pname = "";  
    private String versionName = "";  
    private int versionCode = 0;  
    private Drawable icon;  
    private void prettyPrint() {  
        log(appname + "\t" + pname + "\t" + versionName + "\t" + versionCode + "\t");  
    }  
}  
 
private void listPackages() {  
    ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */ 
    final int max = apps.size();  
    for (int i=0; i<max; i++) {  
        apps.get(i).prettyPrint();  
    }  
}  
 
private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {  
    ArrayList<PInfo> res = new ArrayList<PInfo>();          
    List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);  
    for(int i=0;i<packs.size();i++) {  
        PackageInfo p = packs.get(i);  
        if ((!getSysPackages) && (p.versionName == null)) {  
            continue ;  
        }  
        PInfo newInfo = new PInfo();  
        newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();  
        newInfo.pname = p.packageName;  
        newInfo.versionName = p.versionName;  
        newInfo.versionCode = p.versionCode;  
        newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());  
        res.add(newInfo);  
    }  
    return res;   
} 



用这个方法来获取系统内所包含的Applications信息：
Java代码

   1. private void listPackages() {   
   2.  
   3.    ArrayList < PInfo > apps = getInstalledApps(false); /* false = no system packages */  
   4.  
   5.    final int max = apps.size();   
   6.  
   7.   for (int i=0; i < max; i++) {   
   8.  
   9.        apps.get(i).prettyPrint();   
  10.  
  11.    }   
  12.  }  

Java代码

   1. private void listPackages() {   
   2.  
   3.    ArrayList < PInfo > apps = getInstalledApps(false); /* false = no system packages */  
   4.  
   5.    final int max = apps.size();   
   6.  
   7.   for (int i=0; i < max; i++) {   
   8.  
   9.        apps.get(i).prettyPrint();   
  10.  
  11.    }   
  12.  }  

private void listPackages() { 

   ArrayList < PInfo > apps = getInstalledApps(false); /* false = no system packages */

   final int max = apps.size(); 

  for (int i=0; i < max; i++) { 

       apps.get(i).prettyPrint(); 

   } 
}


Java代码

   1. 01 PackageManager manager = this.getPackageManager();   
   2.  
   3. 02 try {     
   4.  
   5. 03     
   6.  
   7. 04    PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);   
   8.  
   9. 05    String packageName = info.packageName;   
  10.  
  11. 06    int versionCode = info.versionCode;   
  12.  
  13. 07    String versionName = info.versionName;     
  14.  
  15. 08     
  16.  
  17. 09 } catch (NameNotFoundException e) {   
  18.  
  19. 10    // TODO Auto-generated catch block   
  20.  
  21. 11 }  

Java代码

   1. 01 PackageManager manager = this.getPackageManager();   
   2.  
   3. 02 try {     
   4.  
   5. 03     
   6.  
   7. 04    PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);   
   8.  
   9. 05    String packageName = info.packageName;   
  10.  
  11. 06    int versionCode = info.versionCode;   
  12.  
  13. 07    String versionName = info.versionName;     
  14.  
  15. 08     
  16.  
  17. 09 } catch (NameNotFoundException e) {   
  18.  
  19. 10    // TODO Auto-generated catch block   
  20.  
  21. 11 }