1、就算有默认应用程序也打开应用选择面板Intentintent=newIntent(Intent.ACTION_VIEW);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.addCategory("android.intent.category.DEFAULT");Uriuri=Uri.fromFile(file);intent.setDataAndType(uri,"p_w_picpath/*");intent.setComponent(newComponentName("android","com.android.internal.app.ResolverActivity"));context.startActivity(intent);/**context.startActivity(Intent.createChooser(intent,"标题"));*/2、没有默认应用程序打应用选择面板，否则直接打开默认程序Intentintent=newIntent(Intent.ACTION_VIEW);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.addCategory("android.intent.category.DEFAULT");intent.addCategory("android.intent.category.BROWSABLE");Uriuri=Uri.parse(url);intent.setData(uri);try{context.startActivity(intent);}catch(ActivityNotFoundExceptione){Toast.makeText(context,"找不到浏览器",Toast.LENGTH_SHORT).show();}