android 设置应用程序默认值

àì夳堔傛蜴生んèń 2022-04-16 01:23 337阅读 0赞

Android中有时打开一个文件,系统会弹出一个应用程序选择列表供你选择.如果你把某个应用程序设为默认值,则不会弹出选择框,而会直接调用该程序.

设置方法如下:

PackageManager pm = getPackageManager();  
    IntentFilterfilter = new IntentFilter();  
   filter.addCategory("android.intent.category.DEFAULT");  
   ComponentName component = newComponentName("YourClearAppPakageName","YourClearAppClassName");  
   ComponentName\[\] components = new ComponentName\[\]\{new ComponentName("YourPreferAppPakageName","YourPreferAppClassName"), component\};

pm.clearPackagePreferredActivities("YourClearAppPakageName");  
   pm.addPreferredActivity(filter,IntentFilter.MATCH\_CATEGORY\_EMPTY, components, component);

例如：修改系统默认Launhcer，但不是唯一的Launcher

PackageManager pm = getPackageManager();

IntentFilter filter = new IntentFilter();

filter.addAction("android.intent.action.MAIN");

filter.addCategory("android.intent.category.HOME");

filter.addCategory("android.intent.category.DEFAULT");

Context context = getApplicationContext();

ComponentName component = new ComponentName(context.getPackageName(), TestReplaceHomeAppActivity.class.getName());  ComponentName\[\] components = new ComponentName\[\] \{new ComponentName("com.android.launcher", "com.android.launcher.Launcher"), component\};

pm.clearPackagePreferredActivities("com.android.launcher"); pm.addPreferredActivity(filter, IntentFilter.MATCH\_CATEGORY\_EMPTY, components, component);

==================

修改默认浏览器

PackageManager packageManager =context.getPackageManager();  
String str1 = "android.intent.category.DEFAULT";  
String str2 = "android.intent.category.BROWSABLE";  
String str3 = "android.intent.action.VIEW";

//设置默认项的必须参数之一,用户的操作符合该过滤器时,默认设置起效  
IntentFilter filter = new IntentFilter(str3);  
filter.addCategory(str1);  
filter.addCategory(str2);  
filter.addDataScheme("http");  
//设置浏览页面用的Activity  
ComponentName component = new ComponentName(context  
.getPackageName(), BrowserActivity.class.getName());

Intent intent = new Intent(str3);  
intent.addCategory(str2);  
intent.addCategory(str1);  
Uri uri = Uri.parse("http://");  
intent.setDataAndType(uri, null);

//找出手机当前安装的所有浏览器程序  
List resolveInfoList = packageManager  
.queryIntentActivities(intent,  
PackageManager.GET\_INTENT\_FILTERS);

int size = resolveInfoList.size();  
ComponentName\[\] arrayOfComponentName = newComponentName\[size\];  
for (int i = 0; i < size; i++)  
\{  
ActivityInfo activityInfo =resolveInfoList.get(i).activityInfo;  
String packageName = activityInfo.packageName;  
String className = activityInfo.name;  
//清除之前的默认设置  
packageManager.clearPackagePreferredActivities(packageName);  
ComponentName componentName = newComponentName(packageName,  
className);  
arrayOfComponentName\[i\] = componentName;  
\}  
packageManager.addPreferredActivity(filter,  
IntentFilter.MATCH\_CATEGORY\_SCHEME,arrayOfComponentName,  
component);