简书链接:android常用action
文章字数：186,阅读全文大约需要1分钟

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Intent intent = context.getPackageManager().getLaunchIntentForPackage("com.tencent.mobieqq");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED | Intent.FLAG_ACTIVITY_CLEAR_TOP) ;
this.startActivity(intent);
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String url = "mqqwpa://im/chat?chat_type=wpa&uin=694886526";//uin是发送过去的qq号码
  Intent intent= new Intent(Intent.ACTION_VIEW, Uri.parse(url));
  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
  context.startActivity(intent);
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    public static int lanuchWeinXin(Context context) {

        try {
            Intent intent = new Intent();
            ComponentName cmp = new ComponentName("com.tencent.mm", "com.tencent.mm.ui.LauncherUI");
//            intent.setAction(Intent.ACTION_VIEW);
            intent.setAction(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//            Intent.FLAG_ACTIVITY_NEW_TASK ok 否则返回不了
            intent.setComponent(cmp);
            context.startActivity(intent);
            return 0;
        } catch (ActivityNotFoundException e) {
            e.printStackTrace();
            return -1;
        } catch (Exception e) {
            return -2;
        }
    }

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Intent intent = context.getPackageManager().getLaunchIntentForPackage("com.tencent.mobileqq");
if (intent == null) {
    intent = new Intent();
    intent.setComponent(new ComponentName("com.tencent.mobileqq", "com.tencent.mobileqq.activity.SplashActivity"));
}
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED | Intent.FLAG_ACTIVITY_CLEAR_TOP);
this.startActivity(intent);
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public static boolean joinQQGroup(Activity activity, String key) {
    Intent intent = new Intent();
    if (SuperAppContext.getGroup() == null) {
        Toast.makeText(activity, "群入口已经关闭", Toast.LENGTH_SHORT).show();
        return false;
    } else {
        if (SuperAppContext.getGroup().equals("default")) {
            intent.setData(Uri.parse("mqqopensdkapi://bizAgent/qm/qr?url=http%3A%2F%2Fqm.qq.com%2Fcgi-bin%2Fqm%2Fqr%3Ffrom%3Dapp%26p%3Dandroid%26k%3D" + key));

        } else if (SuperAppContext.getGroup().startsWith("http")) {
            intent.setData(Uri.parse(SuperAppContext.getGroup()));

        } else if (SuperAppContext.getGroup().contains("//")) {
            intent.setData(Uri.parse(SuperAppContext.getGroup()));

        } else if (SuperAppContext.getGroup().contains("biz")) {

            intent.setData(Uri.parse(SuperAppContext.getGroup()));
        } else {
            Uri.parse("mqqopensdkapi://bizAgent/qm/qr?url=http%3A%2F%2Fqm.qq.com%2Fcgi-bin%2Fqm%2Fqr%3Ffrom%3Dapp%26p%3Dandroid%26k%3D" + SuperAppContext.getGroup());
        }

    }
    // 此Flag可根据具体产品需要自定义，如设置，则在加群界面按返回，返回手Q主界面，不设置，按返回会返回到呼起产品界面    //intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
    try {
        activity.startActivity(intent);
        return true;
    } catch (Exception e) {
        // 未安装手Q或安装的版本不支持
        return false;
    }
}