android 下载默认启动QQ浏览器

//内置QQ浏览器

//在程序启动的第一个activity 中添加如下函数

//设置系统默认浏览器是QQ浏览器

private void setBroser(){

PackageManager packageManager = this.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");

// 关键 设置QQ浏览：包名：com.tencent.mtt ，类名：com.tencent.mtt.MainActivity

ComponentName component = new ComponentName("com.tencent.mtt",

"com.tencent.mtt.MainActivity");

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<ResolveInfo> resolveInfoList = packageManager

.queryIntentActivities(intent,

PackageManager.GET_INTENT_FILTERS);

int size = resolveInfoList.size();

ComponentName[] arrayOfComponentName = new ComponentName[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 = new ComponentName(packageName,

className);

arrayOfComponentName[i] = componentName;

}

packageManager.addPreferredActivity(filter,

IntentFilter.MATCH_CATEGORY_SCHEME, arrayOfComponentName,

component);

}

//调用

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

setBroser();//调用函数

}